10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)                                    

☒          QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024

OR

☐         TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to ____________

Commission file number: 0-20852

ULTRALIFE CORPORATION

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation of organization)   2000 Technology Parkway Newark, New York 14513 (Address of principal executive offices) (Zip Code) 16-1387013 (I.R.S. Employer Identification No.)   (315) 332-7100 (Registrant’s telephone number, including area code)

None

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Common Stock, $0.10 par value per share	ULBI	NASDAQ
(Title of each class)	(Trading Symbol)	(Name of each exchange on which registered)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data file required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐	Accelerated filer ☐
Non-accelerated filer ☒	Smaller reporting company ☒
	Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ No☒

As of April 22, 2024, the registrant had 16,466,594 shares of common stock outstanding.

ULTRALIFE CORPORATION AND SUBSIDIARIES

INDEX

		Page
PART I.	FINANCIAL INFORMATION
Item 1.	Consolidated Financial Statements (unaudited):
	Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023	1
	Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) for the Three-Month Periods Ended March 31, 2024 and March 31, 2023	2
	Consolidated Statements of Cash Flows for the Three-Month Periods Ended March 31, 2024 and March 31, 2023	3
	Consolidated Statements of Changes in Stockholders’ Equity for the Three-Month Periods Ended March 31, 2024 and March 31, 2023	4
	Notes to Consolidated Financial Statements	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	15
Item 4.	Controls and Procedures	23
PART II.	OTHER INFORMATION
Item 6.	Exhibits	24
	Signatures	25

PART I. FINANCIAL INFORMATION

Item 1. CONSOLIDATED FINANCIAL STATEMENTS

ULTRALIFE CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In Thousands except share amounts)

(Unaudited)

	March 31, 2024			December 31, 2023
ASSETS
Current assets:
Cash	$	10,099		$	10,278
Trade accounts receivable, net of allowance for expected credit losses of $300 and $300, respectively		35,278			31,761
Inventories, net		43,821			42,215
Prepaid expenses and other current assets		5,104			5,949
Total current assets		94,302			90,203
Property, plant and equipment, net		20,670			21,117
Goodwill		37,499			37,571
Other intangible assets, net		14,867			15,107
Deferred income taxes, net		9,873			10,567
Other noncurrent assets		3,340			3,711
Total assets	$	180,551		$	178,276
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	13,315		$	11,336
Current portion of long-term debt		2,000			2,000
Accrued compensation and related benefits		2,013			3,115
Accrued expenses and other current liabilities		6,048			7,279
Total current liabilities		23,376			23,730
Long-term debt		23,140			23,624
Deferred income taxes		1,675			1,714
Other noncurrent liabilities		3,415			3,781
Total liabilities		51,606			52,849
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock – par value $.10 per share; authorized 1,000,000 shares; none issued		-			-
Common stock – par value $.10 per share; authorized 40,000,000 shares; issued – 20,887,446 shares at March 31, 2024 and 20,783,607 shares at December 31, 2023; outstanding – 16,451,332 shares at March 31, 2024 and 16,347,493 shares at December 31, 2023		2,089			2,078
Capital in excess of par value		189,995			189,160
Accumulated deficit		(37,863	)		(40,754	)
Accumulated other comprehensive loss		(3,892	)		(3,660	)
Treasury stock - at cost; 4,436,114 shares at March 31, 2024 and 4,436,114 shares at December 31, 2023		(21,492	)		(21,492	)
Total Ultralife Corporation equity		128,837			125,332
Non-controlling interest		108			95
Total stockholders’ equity		128,945			125,427
Total liabilities and stockholders’ equity		180,551		$	178,276

The accompanying notes are an integral part of these consolidated financial statements.

1

ULTRALIFE CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS)

(In Thousands except per share amounts)

(Unaudited)

	Three-month period ended
	March 31, 2024			March 31, 2023
Revenues	$	41,927		$	31,916
Cost of products sold		30,457			24,480
Gross profit		11,470			7,436
Operating expenses:
Research and development		1,756			2,032
Selling, general and administrative		5,651			5,378
Total operating expenses		7,407			7,410
Operating income		4,063			26
Other (expense) income:
Interest and financing expense		(520	)		(424	)
Miscellaneous income (expense)		64			(70	)
Total other expense		(456	)		(494	)
Income (loss) before income taxes		3,607			(468	)
Income tax provision (benefit)		703			(133	)
Net income (loss)		2,904			(335	)
Net income attributable to non-controlling interest		(13	)		(11	)
Net income (loss) attributable to Ultralife Corporation		2,891			(346	)
Other comprehensive (loss) income:
Foreign currency translation adjustments		(232	)		197
Comprehensive income (loss) attributable to Ultralife Corporation	$	2,659		$	(149	)
Net income (loss) per share attributable to Ultralife common stockholders – basic	$	.18		$	(.02	)
Net income (loss) per share attributable to Ultralife common stockholders – diluted	$	.18		$	(.02	)
Weighted average shares outstanding – basic		16,396			16,135
Potential common shares		122			-
Weighted average shares outstanding - diluted		16,518			16,135

The accompanying notes are an integral part of these consolidated financial statements.

2

ULTRALIFE CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Dollars in Thousands)

(Unaudited)

	Three-month period ended
	March 31, 2024			March 31, 2023
OPERATING ACTIVITIES:
Net income (loss)	$	2,904		$	(335	)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation		740			762
Amortization of intangible assets		228			209
Amortization of financing fees		16			16
Stock-based compensation		161			139
Deferred income taxes		650			(390	)
Changes in operating assets and liabilities:
Accounts receivable		(3,562	)		3,365
Inventories		(1,699	)		(6,026	)
Prepaid expenses and other assets		1,102			639
Accounts payable and other liabilities		(621	)		256
Net cash used in operating activities		(81	)		(1,365	)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment		(372	)		(497	)
Net cash used in investing activities		(372	)		(497	)
FINANCING ACTIVITIES:
Borrowings on revolving credit facility		-			2,300
Payments on term loan facility		(500	)		(500	)
Proceeds from exercise of stock options		685			-
Net cash provided by financing activities		185			1,800
Effect of exchange rate changes on cash		89			(46	)
DECREASE IN CASH		(179	)		(108	)
Cash, Beginning of period		10,278			5,713
Cash, End of period	$	10,099		$	5,605

The accompanying notes are an integral part of these consolidated financial statements.

3

ULTRALIFE CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(In Thousands except share amounts)

(Unaudited)

					Capital		Accumulated
	Common Stock				in Excess		Other									Non-
	Number of				of Par		Comprehensive			Accumulated			Treasury			Controlling
	Shares		Amount		Value		Income (Loss)			Deficit			Stock			Interest		Total
Balance – December 31, 2022		20,570,710	$	2,057	$	187,405	$	(3,750	)	$	(47,951	)	$	(21,484	)	$	126	$	116,403
Net loss											(346	)					11		(335	)
Stock option exercises																			-
Stock-based compensation – stock options						138													138
Stock-based compensation – restricted stock						1													1
Foreign currency translation adjustments adjustments								197											197
Balance – March 31, 2023		20,570,710	$	2,057	$	187,544	$	(3,553	)	$	(48,297	)	$	(21,484	)	$	137	$	116,404
Balance – December 31, 2023		20,783,607	$	2,078	$	189,160	$	(3,660	)	$	(40,754	)	$	(21,492	)	$	95	$	125,427
Net income											2,891						13		2,904
Stock option exercises		103,839		11		674													685
Stock-based compensation – stock options						156													156
Stock-based compensation – restricted stock						5													5
Foreign currency translation adjustments adjustments								(232	)										(232	)
Balance – March 31, 2024		20,887,446	$	2,089	$	189,995	$	(3,892	)	$	(37,863	)	$	(21,492	)	$	108	$	128,945

The accompanying notes are an integral part of these consolidated financial statements.

4

ULTRALIFE CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(In thousands except share and per share amounts)

(Unaudited)

1. BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements of Ultralife Corporation and its subsidiaries (the “Company” or “Ultralife”) have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and with the instructions to Rule 8-03 of Regulation S-X. Accordingly, they do not include all the information and notes for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair presentation of the consolidated financial statements have been included. Results for interim periods should not be considered indicative of results to be expected for a full year. Reference should be made to the consolidated financial statements and related notes thereto contained in our Form 10-K for the year ended December 31, 2023.

The December 31, 2023 consolidated balance sheet information referenced herein was derived from audited financial statements but does not include all disclosures required by GAAP.

Certain items previously reported in specific financial statement captions have been reclassified to conform to the current presentation.

Recently Adopted Accounting Guidance

None.

Recent Accounting Guidance Not Yet Adopted

In December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09 "Income Taxes (Topics 740): Improvements to Income Tax Disclosures" to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. ASU 2023-09 is effective for our annual periods beginning January 1, 2025, with early adoption permitted. We are currently evaluating the potential effect that the updated standard will have on our financial statement disclosures.

2. DEBT

On December 13, 2021, Ultralife, Southwest Electronic Energy Corporation, a Texas corporation and wholly owned subsidiary of Ultralife (“SWE”), CLB, INC., a Texas corporation and wholly owned subsidiary of SWE (“CLB”), Ultralife Excell Holding Corp., a Delaware corporation and wholly owned subsidiary of Ultralife (“UEHC”), Ultralife Canada Holding Corp., a Delaware corporation and wholly owned subsidiary of UEHC (“UCHC”), and Excell Battery Corporation USA, a Texas corporation and wholly owned subsidiary of UEHC (“Excell USA”), as borrowers, entered into the Second Amendment Agreement with KeyBank National Association (“KeyBank” or the “Bank”), as lender and administrative agent, to amend the Credit and Security Agreement dated May 31, 2017 as amended by the First Amendment Agreement by and among Ultralife, SWE, CLB and KeyBank dated May 1, 2019 (the “Credit Agreement”). On November 28, 2022, Ultralife, SWE, CLB, UEHC, UCHC, Excell USA, and Excell Battery Canada ULC, a British Columbia unlimited liability corporation and wholly owned subsidiary of UCHC (“Excell Canada”), entered into that certain Third Amendment Agreement with KeyBank, to further amend the Credit Agreement to, among other things, facilitate the joinder of Excell Canada as a guarantor under the Credit Agreement and to replace the LIBOR benchmark thereunder with SOFR (the “Third Amendment Agreement”, and together with the Second Amendment Agreement and the Credit Agreement, the “Amended Credit Agreement”).

The Amended Credit Agreement, among other things, provides for a 5-year, $10,000 senior secured term loan (the “Term Loan Facility”) and extends the term of the $30,000 senior secured revolving credit facility (the “Revolving Credit Facility”, and together with the Term Loan Facility, the “Amended Credit Facilities”) through May 30, 2025. Up to six months prior to May 30, 2025, the Revolving Credit Facility may be increased to $50,000 with the Bank’s concurrence.

5

As of March 31, 2024, the Company had $5,667 outstanding principal on the Term Loan Facility, $2,000 of which is included in current portion of long-term debt on the balance sheet, and $19,580 outstanding on the Revolving Credit Facility. As of March 31, 2024, total unamortized debt issuance costs of $107, including placement, renewal and legal fees associated with the Amended Credit Agreement, are classified as a reduction of long-term debt on the balance sheet. Debt issuance costs are amortized to interest expense over the term of the Amended Credit Facilities.

The remaining availability under the Revolving Credit Facility is subject to certain borrowing base limits based on trade receivables and inventories.

The Company is required to repay the borrowings under the Term Loan Facility in equal consecutive monthly payments commencing on February 1, 2022, in arrears, together with applicable interest. All unpaid principal and accrued and unpaid interest with respect to the Term Loan Facility is due and payable in full on January 1, 2027. All unpaid principal and accrued and unpaid interest with respect to the Revolving Credit Facility is due and payable in full on May 30, 2025. The Company may voluntarily prepay principal amounts outstanding at any time subject to certain restrictions.

In addition to the customary affirmative and negative covenants, the Company must maintain a consolidated senior leverage ratio, as defined in the Amended Credit Agreement, of equal to or less than 3.5 to 1.0 for the fiscal quarters ending December 31, 2022 and March 31, 2023, and equal to or less than 3.0 to 1.0 for the fiscal quarters ending June 30, 2023 and thereafter. The Company was in full compliance with its covenants under the Amended Credit Agreement as of March 31, 2024.

Borrowings under the Amended Credit Facilities are secured by substantially all the assets of the Company and its subsidiaries.

Upon the effectiveness of the Third Amendment Agreement, interest accrues on outstanding indebtedness under the Amended Credit Facilities at the Daily Simple SOFR Rate, plus an index spread adjustment of 0.10%, plus the applicable margin. The applicable margin ranges from 185 to 215 basis points and is determined based on the Company’s senior leverage ratio.

The Company must pay a fee of 0.15% to 0.25% based on the average daily unused availability under the Revolving Credit Facility.

Payments must be made by the Company to the extent borrowings exceed the maximum amount then permitted to be drawn on the Amended Credit Facilities and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations may be accelerated, and the Bank will have other customary remedies including resort to the security interest the Company provided to the Bank.

3. EARNINGS PER SHARE

Basic earnings (loss) per share (“EPS”) is computed by dividing net income (loss) attributable to Ultralife Corporation by the weighted average shares outstanding during the period. Diluted EPS includes the dilutive effect of securities, if any, and is calculated using the treasury stock method.

For the three-month period ended March 31, 2024, there were 539,358 outstanding stock options and 5,229 unvested restricted stock awards included in the calculation of diluted weighted average shares outstanding, as such securities were dilutive, resulting in 122,515 potential common shares included in the calculation of diluted EPS. There were 524,502 outstanding stock options for the three-month period ended March 31, 2024 not included in EPS as the effect would be anti-dilutive.

For the comparable three-month period ended March 31, 2023, there were no outstanding awards included in the calculation of diluted weighted average shares outstanding and no potential common shares included in the calculation of diluted EPS, as no securities were dilutive. There were 1,420,611 outstanding stock options and 2,500 unvested restricted stock awards not included in the calculation of diluted EPS for the three-month period ended March 31, 2023, as the effect would be antidilutive.

6

4. SUPPLEMENTAL BALANCE SHEET INFORMATION

Fair Value Measurements and Disclosures

The fair value of financial instruments approximated their carrying values at March 31, 2024 and December 31, 2023. The fair value of cash, accounts receivable, accounts payable, accrued liabilities, and the current portion of long-term debt approximates carrying value due to the short-term nature of these instruments.

Cash

The composition of the Company’s cash was as follows:

	March 31,		December 31,
	2024		2023
Cash	$	10,099	$	10,196
Restricted cash		-		82
Total	$	10,099	$	10,278

As December 31, 2023, restricted cash of $82 represented euro-denominated deposits withheld by the Dutch tax authorities and third-party VAT representatives in connection with a previously utilized logistics arrangement in the Netherlands. During the quarter ended March 31, 2024, the deposits were returned to the Company and no longer restricted. As of March 31, 2024, there was no cash classified as restricted cash. Restricted cash as of December 31, 2023 is included as a component of the cash balance for purposes of the consolidated statements of cash flows.

Inventories, Net

Inventories are stated at the lower of cost or net realizable value, net of obsolescence reserves, with cost determined under the first-in, first-out (FIFO) method. The composition of inventories, net was:

	March 31,		December 31,
	2024		2023
Raw materials	$	30,168	$	29,098
Work in process		3,593		3,187
Finished goods		10,060		9,930
Total	$	43,821	$	42,215

Property, Plant and Equipment, Net

Major classes of property, plant and equipment consisted of the following:

	March 31,			December 31,
	2024			2023
Land	$	1,273		$	1,273
Buildings and leasehold improvements		16,007			15,998
Machinery and equipment		57,427			57,584
Furniture and fixtures		2,818			2,845
Computer hardware and software		7,770			7,868
Construction in process		1,695			2,033
		86,990			87,601
Less: Accumulated depreciation		(66,320	)		(66,484	)
Property, plant and equipment, net	$	20,670		$	21,117

Depreciation expense for property, plant and equipment was $740 and $762 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively.

7

Goodwill

The following table summarizes the goodwill activity by segment for the three-month period ended March 31, 2024.

	Battery & Energy			Communications
	Products			Systems		Total
Balance – December 31, 2023	$	26,078		$	11,493	$	37,571
Effect of foreign currency translation		(72	)		-		(72	)
Balance – March 31, 2024	$	26,006		$	11,493	$	37,499

Other Intangible Assets, Net

The composition of other intangible assets was:

	at March 31, 2024
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,072	$	6,796	$	6,276
Patents and technology		5,597		5,344		253
Trade names		4,645		673		3,972
Trademarks		3,400		-		3,400
Other		1,500		534		966
Total other intangible assets	$	28,214	$	13,347	$	14,867

	at December 31, 2023
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,092	$	6,656	$	6,436
Patents and technology		5,606		5,322		284
Trade names		4,647		647		4,000
Trademarks		3,402		-		3,402
Other		1,500		515		985
Total other intangible assets	$	28,247	$	13,140	$	15,107

The change in the cost of total intangible assets from December 31, 2023 to March 31, 2024 is the effect of foreign currency translations.

Amortization expense for intangible assets was $228 and $209 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively. Amortization included in selling, general and administrative expenses was $203 and $185 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively. Amortization included in research and development expenses was $25 and $24 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively.

8

5. STOCK-BASED COMPENSATION

We recorded non-cash stock compensation expense in each period as follows:

	Three-month period ended
	March 31,		March 31,
	2024		2023
Stock options	$	156	$	138
Restricted stock grants		5		1
Total	$	161	$	139

We have stock options outstanding from various stock-based employee compensation plans for which we record compensation cost relating to share-based payment transactions in our financial statements. As of March 31, 2024, there was $699 of total unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted average period of 1.3 years.

The following table summarizes stock option activity for the three-month period ended March 31, 2024:

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at January 1, 2024		1,250,595		$	7.10
Granted		3,460			6.84
Exercised		(103,839	)		6.60
Forfeited or expired		(86,356	)	$	8.96
Outstanding at March 31, 2024		1,063,860		$	7.00		4.22	$	2,258
Vested and expected to vest at March 31, 2024		964,552		$	7.07		4.06	$	1,987
Exercisable at March 31, 2024		604,537		$	7.50		2.92	$	1,018

Cash received from stock option exercises under our stock-based compensation plans for the three-month periods ended March 31, 2024 and March 31, 2023 was $685 and $0, respectively.

Restricted stock awards vest in equal annual installments over three (3) years. Unrecognized compensation cost related to unvested restricted shares at March 31, 2024 and March 31, 2023, respectively, was $31 and $2.

9

6. INCOME TAXES

Our effective tax rate for the three-month periods ended March 31, 2024 and March 31, 2023 was 19.5% and 28.4%, respectively. The period-over-period change was primarily attributable to the geographic mix of our operating results.

As of December 31, 2023, we have domestic net operating loss (“NOL”) carryforwards of $27,200, which expire 2031 through 2035, and domestic tax credits of $2,900, which expire 2028 through 2043, available to reduce future taxable income. As of March 31, 2024, management has concluded it is more likely than not that these domestic NOL and credit carryforwards will be fully utilized.

As of March 31, 2024, for certain past operations in the U.K., we continue to report a valuation allowance for NOL carryforwards of approximately $9,800, nearly all of which can be carried forward indefinitely. Utilization of the net operating losses may be limited due to the change in the past U.K. operation and cannot currently be used to reduce taxable income at our other U.K. subsidiary, Accutronics Ltd. There are no other deferred tax assets related to the past U.K. operations.

As of March 31, 2024, we have not recognized a valuation allowance against our other foreign deferred tax assets, as realization is considered to be more likely than not.

As of March 31, 2024, the Company maintains its assertion that all foreign earnings will be indefinitely reinvested in those operations, other than earnings generated in the U.K.

There were no unrecognized tax benefits related to uncertain tax positions at March 31, 2024 and December 31, 2023.

As a result of our operations, we file income tax returns in various jurisdictions including U.S. federal, U.S. state and foreign jurisdictions. We are routinely subject to examination by taxing authorities in these various jurisdictions. Our U.S. tax matters for 2020 thru 2022 remain subject to IRS examination. Our U.S. tax matters for 2001-2002, 2005-2007, 2009, and 2011-2015 also remain subject to IRS examination due to the remaining availability of net operating loss carryforwards generated in those years. Our U.S. tax matters for 2013 thru 2022 remain subject to examination by various state and local tax jurisdictions. Our tax matters for the years 2013 thru 2022 remain subject to examination by the respective foreign tax jurisdiction authorities.

7. OPERATING LEASES

The Company has operating leases predominantly for operating facilities. As of March 31, 2024, the remaining lease terms on our operating leases range from approximately less than one (1) year to eight (8) years. Lease terms include renewal options reasonably certain of exercise. There is no transfer of title or option to purchase the leased assets upon expiration. There are no residual value guarantees or material restrictive covenants.

The components of lease expense for the current and prior-year comparative periods were as follows:

	Three-month period ended March 31,
	2024		2023
Operating lease cost	$	262	$	241
Variable lease cost		28		28
Total lease cost	$	290	$	269

10

Supplemental cash flow information related to leases was as follows:

	Three-month period ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	265	$	226
Right-of-use assets obtained in exchange for lease liabilities:	$	-	$	-

Supplemental consolidated balance sheet information related to leases was as follows:

	Balance sheet classification	March 31, 2024			December 31, 2023
Assets:
Operating lease right-of-use asset	Other noncurrent assets	$	3,177		$	3,589
Liabilities:
Current operating lease liability	Accrued expenses and other current liabilities	$	780		$	894
Operating lease liability, net of current portion	Other noncurrent liabilities		2,350			2,644
Total operating lease liability		$	3,130		$	3,538
Weighted-average remaining lease term (years)			5.2			5.3
Weighted-average discount rate			6.3	%		4.5	%

Future minimum lease payments as of March 31, 2024 are as follows:

Maturity of operating lease liabilities
2024	$	620
2025		691
2026		618
2027		639
2028		642
Thereafter		458
Total lease payments		3,668
Less: Imputed interest		(538	)
Present value of remaining lease payments	$	3,130

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8. COMMITMENTS AND CONTINGENCIES

Purchase Commitments

As of March 31, 2024, we have made commitments to purchase approximately $330 of production machinery and equipment.

Product Warranties

We estimate future warranty costs to be incurred for product failure rates, material usage and service costs in the development of our warranty obligations. Estimated future costs are based on actual past experience and are generally estimated as a percentage of sales over the warranty period. Changes in our product warranty liability during the first three months of 2024 and 2023 were as follows:

	Three-month period ended March 31,
	2024			2023
Accrued warranty obligations – beginning	$	547		$	323
Accruals for warranties issued		141			84
Settlements made		(49	)		(21	)
Accrued warranty obligations – ending	$	639		$	386

Contingencies and Legal Matters

We are subject to legal proceedings and claims that arise from time to time in the normal course of business. We believe that the final disposition of any such matters will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. However, recognizing that legal matters are subject to inherent uncertainties, there exists the possibility that ultimate resolution of these matters could have a material adverse impact on the Company’s financial position, results of operations or cash flows. We are not aware of any such situations at this time.

9. REVENUE RECOGNITION

Revenues are generated from the sale of products. Performance obligations are met and revenue is recognized upon transfer of control to the customer, which is generally upon shipment. When contract terms require transfer of control upon delivery at a customer’s location, revenue is recognized on the date of delivery. For products shipped under vendor-managed inventory arrangements, revenue is recognized and billed when the product is consumed by the customer, at which point control has transferred and there are no further obligations by the Company. Revenue is measured as the amount of consideration we expect to receive in exchange for shipped product. Sales, value-added and other taxes billed and collected from customers are excluded from revenue. Customers, including distributors, do not have a general right of return.

Separately priced extended warranty contracts are offered on certain Communications Systems products for a duration of up to eight (8) years. Extended warranties are treated as separate performance obligations and recognized to revenue evenly over the term of the respective contract. Revenue not yet recognized on extended warranty contracts is recorded as deferred revenue on the consolidated balance sheet. For the quarter ended March 31, 2024, revenue recognized on extended warranties was $72.

As of March 31, 2024, there was deferred revenue on extended warranty contracts of $1,335, comprised of $287 expected to be recognized as revenue within one (1) year and classified as accrued expenses and other current liabilities on our consolidated balance sheet, and $1,048 expected to be recognized as revenue over the remaining duration of the respective contracts and classified as other noncurrent liabilities on our consolidated balance sheet.

As of December 31, 2023, there was deferred revenue on extended warranty contracts of $1,407, comprised of $287 expected to be recognized as revenue within one (1) year and classified as accrued expenses and other current liabilities on our consolidated balance sheet, and $1,120 expected to be recognized as revenue evenly over the remaining duration of the respective contracts and classified as other noncurrent liabilities on our consolidated balance sheet.

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As of March 31, 2024 and December 31, 2023, the Company had no other unsatisfied performance obligations for contracts with an original expected duration of greater than one year. Pursuant to Topic 606, we have applied the practical expedient with respect to disclosure of the deferral and future expected timing of revenue recognition for transaction price allocated to remaining performance obligations.

10. BUSINESS SEGMENT INFORMATION

We report our results in two operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes Lithium 9-volt, cylindrical and various other non-rechargeable batteries, in addition to rechargeable batteries, uninterruptable power supplies, charging systems and accessories. The Communications Systems segment includes RF amplifiers, power supplies, cable and connector assemblies, amplified speakers, equipment mounts, case equipment, man-portable systems, integrated communication systems for fixed or vehicle applications and communications and electronics systems design. We believe that reporting performance at the gross profit level is the best indicator of segment performance. 

Three-month period ended March 31, 2024:

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	34,989	$	6,938	$	-		$	41,927
Segment contribution		8,986		2,484		(7,407	)		4,063
Other expense						(456	)		(456	)
Tax provision						(703	)		(703	)
Non-controlling interest						(13	)		(13	)
Net income attributable to Ultralife Corporation								$	2,891

Three-month period ended March 31, 2023:

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	28,470	$	3,446	$	-		$	31,916
Segment contribution		6,512		924		(7,410	)		26
Other expense						(494	)		(494	)
Tax benefit						133			133
Non-controlling interest						(11	)		(11	)
Net loss attributable to Ultralife Corporation								$	(346	)

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The following tables disaggregate our business segment revenues by major source and geography.

Commercial and Government/Defense Revenue Information:

Three-month period ended March 31, 2024:

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	34,989	$	24,140		$	10,849
Communications Systems		6,938		-			6,938
Total	$	41,927	$	24,140		$	17,787
				58	%		42	%

Three-month period ended March 31, 2023:

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	28,470	$	22,219		$	6,251
Communications Systems		3,446		-			3,446
Total	$	31,916	$	22,219		$	9,697
				70	%		30	%

U.S. and Non-U.S. Revenue Information¹:

Three-month period ended March 31, 2024:

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	34,989	$	19,603		$	15,386
Communications Systems		6,938		4,858			2,080
Total	$	41,927	$	24,461		$	17,466
				58	%		42	%

Three-month period ended March 31, 2023:

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	28,470	$	13,768		$	14,702
Communications Systems		3,446		2,877			569
Total	$	31,916	$	16,645		$	15,271
				52	%		48	%

¹ Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects.

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. This report contains certain forward-looking statements and information that are based on the beliefs of management as well as assumptions made by and information currently available to management. The statements contained in this report relating to matters that are not historical facts are forward-looking statements that involve risks and uncertainties, including, but not limited to, changes in economic conditions including inflation and supply chain disruptions affecting our business, revenues and earnings adversely; our reliance on certain key customers; reductions or delays in U.S. and foreign military spending; our efforts to develop new products or new commercial applications for our products; potential disruptions in our supply of raw materials and components; breaches in information systems security and other disruptions in our information technology systems; our ability to recruit and retain top management and key personnel; our resources being overwhelmed by our growth; the continued impact of COVID-19, or other pandemics that may arise, causing delays in the manufacture and delivery of our mission critical products to end customers;  the unique risks associated with our China operations; fluctuations in the price of oil and the resulting impact on the demand for downhole drilling; possible future declines in demand for the products that use our batteries or communications systems; variability in our quarterly and annual results and the price of our common stock; safety risks, including the risk of fire; rising interest rates increasing the cost of our variable borrowings; purchases by our customers of product quantities not meeting the volume expectations in our supply agreements;  potential costs attributable to the warranties we supply with our products and services; our inability to comply with changes to the regulations for the shipment of our products; our entrance into new end-markets which could lead to additional financial exposure; negative publicity concerning Lithium-ion batteries; our ability to utilize our net operating loss carryforwards; our exposure to foreign currency fluctuations; possible impairments of our goodwill and other intangible assets; the risk that we are unable to protect our proprietary and intellectual property; rules and procedures regarding contracting with the U.S. and foreign governments; exposure to possible violations of the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act or other anti-corruption laws; known and unknown environmental matters; possible audits of our contracts by the U.S. and foreign governments and their respective defense agencies; our ability to comply with government regulations regarding the use of “conflict minerals”; and other risks and uncertainties, certain of which are beyond our control.  Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may differ materially from those forward-looking statements described herein. When used in this report, the words “anticipate,” “believe,” “estimate,” “expect,” “seek,” “project,” “intend,” “plan,” “may,” “will,” “should,” “foresee,” “could,” “likely,” or words of similar import are intended to identify forward-looking statements. For further discussion of certain of the matters described above and other risks and uncertainties, see Item 1A, “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2023.

Although we base these forward-looking statements on assumptions that we believe are reasonable when made, we caution you that forward-looking statements are not guarantees of future performance and that our actual results of operations, financial condition and liquidity and developments in the industries in which we operate may differ materially from those made in or suggested by the forward-looking statements contained herein. In addition, even if our results of operations, financial condition and liquidity and the development of the industries in which we operate are consistent with the forward-looking statements contained in this document, those results or developments may not be indicative of results or developments in subsequent periods. Given these risks and uncertainties, you are cautioned not to place undue reliance on these forward-looking statements. Any forward-looking statements that we make herein speak only as of the date of those statements, and we undertake no obligation to update those statements or to publicly announce the results of any revisions to any of those statements to reflect future events or developments. Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance, unless expressed as such, and should only be viewed as historical data.

Undue reliance should not be placed on our forward-looking statements. Except as required by law, we disclaim any obligation to update any risk factors or to publicly announce the results of any revisions to any of the forward-looking statements to reflect new information or risks, future events or other developments.

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) should be read in conjunction with the consolidated financial statements and notes thereto in Part I, Item 1 of this Form 10-Q, and the consolidated financial statements and notes thereto and risk factors in our Annual Report on Form 10-K for the year ended December 31, 2023.

The financial information in this MD&A is presented in thousands of dollars, except for share and per share amounts, unless otherwise specified.

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General

We offer products and services ranging from power solutions to communications and electronics systems to customers across the globe in the government, defense and commercial sectors. With an emphasis on strong engineering and a collaborative approach to problem solving, we design and manufacture power and communications systems including rechargeable and non-rechargeable batteries, charging systems, communications and electronics systems and accessories, and custom engineered systems related to those product lines. We continually evaluate ways to grow, including the design, development and sale of new products, expansion of our sales force to penetrate new markets and territories, as well as seeking opportunities to expand through acquisitions.

We sell our products worldwide through a variety of trade channels, including original equipment manufacturers (“OEMs”), industrial and defense supply distributors, and directly to U.S. and foreign defense departments. We enjoy strong name recognition in our markets under our Ultralife®, Ultralife HiRate®, Ultralife Thin Cell®, Ultralife Batteries Inc.®, Lithium Power®, McDowell Research®, AMTI^TM, ABLE^TM, ACCUTRONICS^TM, ACCUPRO^TM, ENTELLION^TM, SWE Southwest Electronic Energy Group^TM, SWE SEASAFE^TM, Excell Battery Group^TM and Criterion Gauge^TM brands, among others. We have sales, operations and product development facilities in North America, Europe and Asia.

We report our results in two operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes Lithium 9-volt, cylindrical, thin cell and other non-rechargeable batteries, in addition to rechargeable batteries, uninterruptable power supplies, charging systems and accessories. The Communications Systems segment includes RF amplifiers, power supplies, cable and connector assemblies, amplified speakers, equipment mounts, case equipment, man-portable systems, integrated communication systems for fixed or vehicle applications and communications and electronics systems design. We believe that reporting performance at the gross profit level is the best indicator of segment performance. As such, we report segment performance at the gross profit level and operating expenses as Corporate charges. (See Note 10 in the notes to consolidated financial statements in Item 1 of Part 1 of this Form 10-Q.)

Our website address is www.ultralifecorporation.com. We make available free of charge via a hyperlink on our website (see Investor Relations link on the website) our annual reports on Form 10-K, proxy statements, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports and statements as soon as reasonably practicable after such material is electronically filed with or furnished to the Securities and Exchange Commission (“SEC”). We will provide copies of these reports upon written request to the attention of Philip A. Fain, CFO, Treasurer and Secretary, Ultralife Corporation, 2000 Technology Parkway, Newark, New York, 14513. Our filings with the SEC are also available through the SEC website at www.sec.gov or at the SEC Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 or by calling 1-800-SEC-0330.

Overview

Consolidated revenues of $41,927 for the three-month period ended March 31, 2024, increased by $10,011 or 31.4%, over $31,916 for the three-month period ended March 31, 2023, reflecting both an increase in government/defense sales of 83.4% and commercial sales of 8.6%. During the first quarter of 2023, the Company experienced a cybersecurity ransomware attack which impacted our ability to process orders, ship products, provide services to our customers and effectively manage our sales and operating planning process over a several-week period for our Newark, NY location and an even longer period for our Virginia Beach, VA location. Considerable time during the first quarter of 2023 was devoted to data restoration, systems recovery, systems security augmentation, and regulatory reporting of the attack.  Our resulting cybersecurity insurance claim covering the cost of engaging external cybersecurity experts and the losses incurred due to the interruption of our business remains in review by our insurance carrier.

Gross profit was $11,470, or 27.4% of revenue, for the three-month period ended March 31, 2024, compared to $7,436, or 23.3% of revenue, for the same quarter a year ago.  The 410-basis point improvement primarily resulted from higher factory volume for both our Battery & Energy Products and Communications Systems businesses, more efficiencies resulting from a concerted effort to level-load production more evenly across the 2024 quarter and improved price realization. Gross profit for the 2023 period was tempered by the inefficiencies associated with the cybersecurity attack, lingering supply chain disruptions and higher material costs across both business segments.

16

Operating expenses remained essentially flat, decreasing to $7,407 for the three-month period ended March 31, 2024, compared to $7,410 for the three-month period ended March 31, 2023.  Operating expenses for the 2024 period were 17.7% of revenue compared to 23.2% of revenue for the year-earlier period.

Operating income for the three-month period ended March 31, 2024 was $4,063, or 9.7% of revenues, compared to $26, or 0.1% of revenues, for the year-earlier period. The increase in operating income primarily resulted from the 31.4% revenue increase, the 410-basis point improvement in gross margin and the 550-basis point improvement in operating expense to revenues leverage.

Net income (loss) attributable to Ultralife Corporation was $2,891, or $0.18 per share – basic and diluted, for the three-month period ended March 31, 2024, compared to ($346) or ($0.02) per share – basic and diluted, for the three-month period ended March 31, 2023. 

Adjusted EBITDA, defined as net income (loss) attributable to Ultralife Corporation before net interest expense, provision (benefit) for income taxes, depreciation and amortization, and stock-based compensation expense, plus/minus expenses/income that we do not consider reflective of our ongoing operations, amounted to $5,243, or 12.5% of revenues, for the first quarter of 2024, compared to $1,155, or 3.6% of revenues, for the first quarter of 2023. See the section “Adjusted EBITDA” beginning on page 19 for a reconciliation of adjusted EBITDA to net income (loss) attributable to Ultralife Corporation.

With the current healthy backlog and new product commercialization, we are prepared to capture additional organic growth opportunities, while we continue to drive gross margin improvements and invest in further new product development.  We are increasingly optimistic that we are positioned to sustain profitable growth, generate incremental cash flow to pay down debt, and invest in strategic capital expenditures and accretive acquisitions. 

Results of Operations

Three-Month Periods Ended March 31, 2024 and March 31, 2023

Revenues. Consolidated revenues for the three-month period ended March 31, 2024 were $41,927, an increase of $10,011, or 31.4%, over $31,916 for the three-month period ended March 31, 2023. Overall, government/defense sales increased 83.4% and commercial sales increased 8.6%. During the first quarter of 2023, the Company experienced a cybersecurity ransomware attack which impacted our ability to process orders, ship products, provide services to our customers and effectively manage our sales and operating planning process over a several week period for our Newark, NY location and an even longer period for our Virginia Beach, VA location. A large portion of our time during that quarter was devoted to data restoration, systems security augmentation, and regulatory reporting of the attack, all of which were successfully accomplished with no ransom paid.

Battery & Energy Products revenues increased $6,519, or 22.9%, from $28,470 for the three-month period ended March 31, 2023 to $34,989 for the three-month period ended March 31, 2024. The revenue growth was primarily attributable to an increase in government/defense sales of 73.6% reflecting strong demand from our U.S.-based global prime, and an increase in commercial sales of 8.6% reflecting medical and industrial market sales growth of 54.7% and 2.3%, respectively, partially offset by a 13.9% decline in oil & gas market sales.  The year-over -year comparison was also impacted by the 2023 cybersecurity attack.  

Communications Systems sales increased $3,492, or 101.3%, from $3,446 for the three-month period ended March 31, 2023 to $6,938 for the three-month period ended March 31, 2024. The increase was primarily attributable to shipments of EL8000 server cases to a large multinational information technology company, integrated systems of amplifiers and radio vehicle mounts to a major international defense contractor under an ongoing allied country government/defense modernization program, and power systems to a U.S.-based global prime.  The year-over-year comparison was also impacted by the 2023 cybersecurity attack.      

Cost of Products Sold / Gross Profit.  Cost of products sold totaled $30,457 for the quarter ended March 31, 2024, an increase of $5,977, or 24.4%, from the $24,480 reported for the same three-month period a year ago. Consolidated cost of products sold as a percentage of total revenue decreased from 76.7% for the three-month period ended March 31, 2023 to 72.6% for the three-month period ended March 31, 2024. Correspondingly, consolidated gross margin increased from 23.3% for the three-month period ended March 31, 2023, to 27.4% for the three-month period ended March 31, 2024, primarily reflecting higher factory volume for both our Battery & Energy Products and Communications Systems businesses, favorable sales product mix, more efficiencies resulting from a concerted effort to level-load production more evenly across the 2024 quarter and improved price realization. Gross profit for the 2023 period was tempered by the inefficiencies associated with the cybersecurity attack, lingering supply chain disruptions and higher material costs across both business segments.

17

For our Battery & Energy Products segment, gross profit for the first quarter of 2024 was $8,986, an increase of $2,474 or 38.0% from gross profit of $6,512 for the first quarter of 2023. Battery & Energy Products’ gross margin of 25.7% increased by 280-basis points from the 22.9% gross margin for the year-earlier period, primarily due to higher cost absorption and more efficiencies resulting from a concerted effort to level-load production more evenly across the 2024 quarter, as well as improved price realization. The 2023 period was impacted by inefficiencies resulting from the cybersecurity attack as well as lingering supply chain disruptions, higher material and logistics costs.

For our Communications Systems segment, gross profit for the first quarter of 2024 was $2,484 or 35.8% of revenues, compared to gross profit of $924 or 26.8% of revenues for the first quarter of 2023. The 900-basis point increase in gross margin was primarily due to higher factory volume and favorable sales product mix in the first quarter of 2024, and the impact of the cybersecurity attack on the year-earlier period.

Operating Expenses. Operating expenses for the three-month period ended March 31, 2024 were $7,407, a decrease of $3 from the $7,410 for the three-month period ended March 31, 2023. The decrease is primarily attributable to the timing of new product development costs as well as the impact of recording the $100 deductible on our cyber insurance policy during the 2023 first quarter. Both periods reflected continued tight control over discretionary spending.

Overall, operating expenses were 17.7% of revenue for the quarter ended March 31, 2024 compared to 23.2% of revenue for the quarter ended March 31, 2023.  Amortization expense associated with intangible assets related to our acquisitions was $228 for the first quarter of 2024 ($203 in selling, general and administrative expenses and $25 in research and development costs), compared with $209 for the first quarter of 2023 ($185 in selling, general, and administrative expenses and $24 in research and development costs). Research and development costs were $1,756 for the three-month period ended March 31, 2024, a decrease of $276 or 13.6%, from $2,032 for the three-month period ended March 31, 2023. The decrease is largely attributable to the timing of new product development in both of our businesses as we aggressively pursue both government/defense major programs and commercial opportunities. Selling, general, and administrative expenses were $5,651 for the three-month period ended March 31, 2024, an increase of $273 or 5.1% from $5,378 for the first quarter of 2023. The period over period increase was primarily attributable to higher executive variable compensation costs accrued in the first quarter 2024, partially offset by the $100 deductible cost incurred on our cyber insurance policy during the 2023 first quarter. 

Other Expense. Other expense totaled $456 for the three-month period ended March 31, 2024 compared to $494 for the three-month period ended March 31, 2023. Interest and financing expense increased $96, or 22.6%, from $424 for the first quarter of 2023 to $520 for the comparable period in 2024. The increase is primarily due to additional draws on our revolver resulting from the 2023 cybersecurity attack and rising interest rates. Miscellaneous (income) expense amounted to ($64) for the first quarter of 2024 compared to $70 for the first quarter of 2023, primarily attributable to foreign exchange gains and loss due to fluctuations in foreign currency exchange rates.

Income Taxes. For the three-month period ended March 31, 2024, Ultralife recognized an income tax provision of $703, comprised of a current provision of $53 expected to be paid on income primarily in foreign jurisdictions and a deferred tax provision of $650 which primarily represents non-cash charges for U.S. taxes that we expect will be fully offset by net operating loss carryforwards and other tax credits for the foreseeable future. This compares to a benefit of $133 comprised of a current provision of $257 and deferred benefit of $390 for the three-month period ended March 31, 2023.  Our effective tax rate was 19.5% for the first quarter of 2024 as compared to 28.4% for the first quarter of 2023, primarily attributable to the geographic mix of our operating results.  See Note 6 to the consolidated financial statements in Item 1 of Part I of this Form 10-Q for additional information regarding our income taxes.

Net Income (Loss) Attributable to Ultralife Corporation. Net income (loss) attributable to Ultralife Corporation was $2,891, or $0.18 per share – basic and diluted, for the three-month period ended March 31, 2024, compared to ($346), or ($0.02) per share – basic and diluted, for the three-month period ended March 31, 2023.  Adjusted EPS was $0.21 per share on a diluted basis for the first quarter of 2024, compared to an adjusted ($0.05) per share for the 2023 period.  Adjusted EPS for 2024 excludes the provision for deferred income taxes of $650 which represents non-cash charges primarily for U.S. income taxes that we expect will be fully offset by net operating loss carryforwards and other tax credits for the foreseeable future. Adjusted EPS for 2023 excludes the benefit for deferred income taxes of $390 which represents a non-cash benefit primarily for U.S. net operating losses and temporary tax differences which are expected to offset future U.S. taxable income. See section “Adjusted Earnings Per Share” on page 21 for a reconciliation of adjusted EPS to EPS. Weighted average shares outstanding used to compute diluted earnings per share increased from 16,135,358 for the first quarter of 2023 to 16,518,389 for the first quarter of 2024.  The increase is attributable to the exercise of stock options and the vesting of restricted stock since the first quarter of 2023.  There was no dilutive effect of outstanding stock awards for the first quarter of 2023 due to the net loss recognized for this period.

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Adjusted EBITDA

In evaluating our business, we consider and use adjusted EBITDA, a non-GAAP financial measure, as a supplemental measure of our operating performance. We define adjusted EBITDA as net income (loss) attributable to Ultralife Corporation before interest expense, provision (benefit) for income taxes, depreciation and amortization, and stock-based compensation expense, plus/minus expense/income that we do not consider reflective of our ongoing continuing operations. We also use adjusted EBITDA as a supplemental measure to review and assess our operating performance and to enhance comparability between periods. We believe the use of adjusted EBITDA facilitates investors’ understanding of operating performance from period to period by backing out potential differences caused by variations in such items as capital structures (affecting relative interest expense and stock-based compensation expense), the amortization of intangible assets acquired through our business acquisitions (affecting relative amortization expense and provision (benefit) for income taxes), the age and book value of facilities and equipment (affecting relative depreciation expense) and one-time charges/benefits relating to income taxes. We also present adjusted EBITDA from operations because we believe it is frequently used by securities analysts, investors and other interested parties as a measure of financial performance. We reconcile adjusted EBITDA to net income (loss) attributable to Ultralife Corporation, the most comparable financial measure under GAAP.

We use adjusted EBITDA in our decision-making processes relating to the operation of our business together with GAAP financial measures such as operating income (loss). We believe that adjusted EBITDA permits a comparative assessment of our operating performance, relative to our performance based on our GAAP results, while eliminating the effects of depreciation and amortization, which may vary from period to period without any correlation to underlying operating performance, and of stock-based compensation, which is a non-cash expense that varies widely among companies. We believe that by presenting adjusted EBITDA, we assist investors in gaining a better understanding of our business on a going forward basis. We provide information relating to our adjusted EBITDA so that securities analysts, investors and other interested parties have the same data that we employ in assessing our overall operations. We believe that trends in our adjusted EBITDA are a valuable indicator of our operating performance on a consolidated basis and of our ability to produce operating cash flows to fund working capital needs, to service debt obligations and to fund capital expenditures.

The term adjusted EBITDA is not defined under GAAP and is not a measure of operating income (loss), operating performance or liquidity presented in accordance with GAAP. Our adjusted EBITDA has limitations as an analytical tool, and when assessing our operating performance, adjusted EBITDA should not be considered in isolation or as a substitute for net income (loss) attributable to Ultralife Corporation or other consolidated statement of operations data prepared in accordance with GAAP. Some of these limitations include, but are not limited to, the following:

● Adjusted EBITDA does not reflect (1) our cash expenditures or future requirements for capital expenditures or contractual commitments; (2) changes in, or cash requirements for, our working capital needs; (3) the interest expense, or the cash requirements necessary to service interest or principal payments, on our debt; (4) income taxes or the cash requirements for any tax payments; and (5) all of the costs associated with operating our business;

● Although depreciation and amortization are non-cash charges, the assets being depreciated and amortized often will have to be replaced in the future, and adjusted EBITDA from continuing operations does not reflect any cash requirements for such replacements;

● While stock-based compensation is a component of cost of products sold and operating expenses, the impact on our consolidated financial statements compared to other companies can vary significantly due to such factors as assumed life of the stock-based awards and assumed volatility of our common stock; and

● Other companies may calculate adjusted EBITDA differently than we do, limiting its usefulness as a comparative measure.

19

We compensate for these limitations by relying primarily on our GAAP results and using adjusted EBITDA only on a supplemental basis.  Neither current nor potential investors in our securities should rely on adjusted EBITDA as a substitute for any GAAP measures and we encourage investors to review the following reconciliation of adjusted EBITDA to net loss attributable to Ultralife Corporation.

Adjusted EBITDA is calculated as follows for the periods presented:

	Three-month period ended
	March 31,		March 31,
	2024		2023
Net income (loss) attributable to Ultralife Corporation	$	2,891	$	(346	)
Adjustments:
Interest expense		520		424
Income tax provision (benefit)		703		(133	)
Depreciation expense		740		762
Amortization of intangible assets		228		209
Stock-based compensation expense		161		139
Cyber insurance deductible		-		100
Adjusted EBITDA	$	5,243	$	1,155

20

Adjusted Earnings Per Share

In evaluating our business, we consider and use adjusted earnings per share (“EPS”), a non-GAAP financial measure, as a supplemental measure of our business performance. We define adjusted EPS as net income (loss) attributable to Ultralife Corporation excluding the provision (benefit) for deferred income taxes divided by our weighted average shares outstanding on both a basic and diluted basis. We believe that this information is useful in providing period-to-period comparisons of our results by reflecting the portion of our tax provision that will be predominantly offset by our U.S. net operating loss carryforwards and other tax credits for the foreseeable future. We reconcile adjusted EPS to EPS, the most comparable financial measure under GAAP. Neither current nor potential investors in our securities should rely on adjusted EPS as a substitute for any GAAP measures and we encourage investors to review the following reconciliation of adjusted EPS to EPS and net income (loss) attributable to Ultralife Corporation.

Adjusted EPS is calculated as follows for the periods presented:

	Three-month period ended
	March 31, 2024						March 31, 2023
	Amount		Per basic share		Per diluted share		Amount			Per basic share			Per diluted share
Net income (loss) attributable to Ultralife Corporation	$	2,891	$	.18	$	.18	$	(346	)	$	(.02	)	$	(.02	)
Deferred tax provision (benefit)		650		.04		.03		(390	)		(.03	)		(.03	)
Adjusted net income (loss)	$	3,541	$	.22	$	.21	$	(736	)	$	(.05	)	$	(.05	)
Weighted average shares outstanding				16,396		16,518					16,135			16,135

21

Liquidity and Capital Resources

As of March 31, 2024, cash totaled $10,099, a decrease of $179 as compared to $10,278 of cash held at December 31, 2023.

During the three-month period ended March 31, 2024, cash used in our operations was $81, as compared to $1,365 cash used for the three-month period ended March 31, 2023.

For the 2024 period, cash used in our operations was attributable to $4,780 used for working capital, driven by $3,562 for accounts receivable due to the timing of shipments and cash collections from our customers, and $1,699 for inventory purchases to secure key components to service our order backlog on a timely basis. The increase in working capital was largely offset by net income of $2,904 plus non-cash items totaling $1,795 for depreciation, amortization, stock-based compensation, and deferred taxes.

Cash used in investing activities for the three months ended March 31, 2024 was $372 for capital expenditures, primarily reflecting investments in equipment for new products transitioning to high-volume manufacturing.

Cash provided by financing activities for the three months ended March 31, 2024 was $185, driven by cash proceeds of $685 on stock option exercises during the quarter, partially offset by $500 of principle payments on our term loan.

We continue to have significant U.S. net operating loss carryforwards available to utilize as an offset to future taxable income.  See Note 6 to the consolidated financial statements in Item 1 of Part 1 of this Form 10-Q for additional information.

Going forward, we expect positive operating cash flow and the availability of borrowings under our Revolving Credit Facility will be sufficient to meet our general funding requirements for the foreseeable future. 

To provide flexibility in accessing the capital markets, on March 30, 2021, the Company filed a shelf registration statement on Form S-3 (File No. 333-254846) (the “Prior Registration Statement”) registering securities in an aggregate amount of $100,000,000. None of the $100,000,000 of registered securities were sold under the Prior Registration Statement (the “Unsold Securities”). Under the rules of the Securities and Exchange Commission (the “SEC”) the Prior Registration Statement was set to expire on April 2, 2024. Therefore, on March 29, 2024, the Company filed a new shelf registration statement on Form S-3 (File No. 333-278360) (the “New Registration Statement”) to replace the Prior Registration Statement. The New Registration Statement includes all $100,000,000 of the Unsold Securities registered on the Prior Registration Statement. During the grace period afforded by Rule 415(a)(5) under the Securities Act of 1933, as amended (the “Securities Act”), we may offer and sell the Unsold Securities under the Prior Registration Statement until the SEC declares the New Registration Statement effective. Pursuant to Rule 415(a)(6) under the Securities Act, the offering of the Unsold Securities under the Prior Registration Statement will be deemed terminated as of the date of effectiveness of the New Registration Statement. Upon the filing of an appropriate prospectus supplement or supplements under either the Prior Registration Statement, or upon its effectiveness the New Registration Statement, we may offer and sell our securities from time to time in one or more offerings, at our discretion. We intend to use the net proceeds resulting from any sales of these securities for general corporate purposes which may include, but are not limited to, potential acquisitions of complementary businesses or technologies, strategic capital expenditures to expand and protect our competitive position, and investments in the development of transformational, competitively differentiated products for attractive growth markets.

Commitments

As of March 31, 2024, the Company had $19,580 outstanding borrowings on the Revolving Credit Facility and $5,667 on the Term Loan Facility. The Company was in full compliance with all covenants under the Credit Facilities as of March 31, 2024.

As of March 31, 2024, we had made commitments to purchase approximately $330 of production machinery and equipment. 

Critical Accounting Policies

Management exercises judgment in making important decisions pertaining to choosing and applying accounting policies and methodologies in many areas. Not only are these decisions necessary to comply with GAAP, but they also reflect management’s view of the most appropriate manner in which to record and report our overall financial performance. All accounting policies are important, and all policies described in Note 1 to the consolidated financial statements in our 2023 Annual Report on Form 10-K should be reviewed for a greater understanding of how our financial performance is recorded and reported.

During the first quarter of 2024, there were no significant changes in the manner in which our significant accounting policies were applied or in which related assumptions and estimates were developed.

22

Item 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our President and Chief Executive Officer (Principal Executive Officer) and our Chief Financial Officer and Treasurer (Principal Financial Officer) have evaluated our disclosure controls and procedures (as defined in Securities Exchange Act Rules 13a-15(e)) as of the end of the period covered by this quarterly report. Based on this evaluation, our President and Chief Executive Officer and Chief Financial Officer and Treasurer concluded that our disclosure controls and procedures were effective as of such date.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal control over financial reporting (as defined in Securities Exchange Act Rule 13a-15(f)) that occurred during the fiscal quarter covered by this quarterly report that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

23

PART II.         OTHER INFORMATION

Item 6.         Exhibits

Exhibit Index	Exhibit Description	Incorporated by Reference from
31.1	Rule 13a-14(a) / 15d-14(a) CEO Certifications	Filed herewith
31.2	Rule 13a-14(a) / 15d-14(a) CFO Certifications	Filed herewith
32	Section 1350 Certifications	Furnished herewith
101.INS	Inline XBRL Instance Document	Filed herewith
101.SCH	Inline XBRL Taxonomy Extension Schema Document	Filed herewith
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document	Filed herewith
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document	Filed herewith
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document	Filed herewith
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document	Filed herewith
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)	Filed herewith

Attached as Exhibit 101 to this report are the following formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023, (ii) Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) for the three months ended March 31, 2024 and 2023, (iii) Consolidated Statements of Cash Flows for the three months ended March 31, 2024 and 2023, (iv) Consolidated Statements of Changes in Stockholders’ Equity for the three months ended March 31, 2024 and 2023, and (v) Notes to Consolidated Financial Statements.

24

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	ULTRALIFE CORPORATION
	(Registrant)
Date: April 25, 2024	By: /s/ Michael E. Manna
	Michael E. Manna
	President and Chief Executive Officer
	(Principal Executive Officer)
Date: April 25, 2024	By: /s/ Philip A. Fain
	Philip A. Fain
	Chief Financial Officer and Treasurer
	(Principal Financial Officer and
	Principal Accounting Officer)

25

EX-31.1

Exhibit 31.1

I, Michael E. Manna, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Ultralife Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 25, 2024	By: /s/ Michael E. Manna
	Michael E. Manna
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

I, Philip A. Fain, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Ultralife Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 25, 2024	By: /s/ Philip A. Fain
	Philip A. Fain
	Chief Financial Officer and Treasurer

EX-32

Exhibit 32

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (“Section 906”), Michael E. Manna and Philip A. Fain, the President and Chief Executive Officer and Chief Financial Officer and Treasurer, respectively, of Ultralife Corporation, certify that (i) the Quarterly Report on Form 10-Q for the quarter ended March 31, 2024 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of Ultralife Corporation.

A signed original of this written statement required by Section 906 has been provided to Ultralife Corporation and will be retained by Ultralife Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

Date: April 25, 2024	By: /s/ Michael E. Manna
	Michael E. Manna
	President and Chief Executive Officer
Date: April 25, 2024	By: /s/ Philip A. Fain
	Philip A. Fain
	Chief Financial Officer and Treasurer

XML

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 22, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	0-20852
Entity Registrant Name	ULTRALIFE CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2000 Technology Parkway
Entity Address, City or Town	Newark
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14513
Entity Tax Identification Number	16-1387013
City Area Code	315
Local Phone Number	332-7100
Title of 12(b) Security	Common Stock, $0.10 par value per share
Trading Symbol	ULBI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		16,466,594
Entity Central Index Key	0000875657
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash	$ 10,099	$ 10,278
Trade accounts receivable, net of allowance for expected credit losses of $300 and $300, respectively	35,278	31,761
Inventories, net	43,821	42,215
Prepaid expenses and other current assets	5,104	5,949
Total current assets	94,302	90,203
Property, plant and equipment, net	20,670	21,117
Goodwill	37,499	37,571
Other intangible assets, net	14,867	15,107
Deferred income taxes, net	9,873	10,567
Other noncurrent assets	3,340	3,711
Total assets	180,551	178,276
Current liabilities:
Accounts payable	13,315	11,336
Current portion of long-term debt	2,000	2,000
Accrued compensation and related benefits	2,013	3,115
Accrued expenses and other current liabilities	6,048	7,279
Total current liabilities	23,376	23,730
Long-term debt	23,140	23,624
Deferred income taxes	1,675	1,714
Other noncurrent liabilities	3,415	3,781
Total liabilities	51,606	52,849
Commitments and Contingencies
Stockholders’ equity:
Preferred stock – par value $.10 per share; authorized 1,000,000 shares; none issued	0	0
Common stock – par value $.10 per share; authorized 40,000,000 shares; issued – 20,887,446 shares at March 31, 2024 and 20,783,607 shares at December 31, 2023; outstanding – 16,451,332 shares at March 31, 2024 and 16,347,493 shares at December 31, 2023	2,089	2,078
Capital in excess of par value	189,995	189,160
Accumulated deficit	(37,863)	(40,754)
Accumulated other comprehensive loss	(3,892)	(3,660)
Treasury stock - at cost; 4,436,114 shares at March 31, 2024 and 4,436,114 shares at December 31, 2023	(21,492)	(21,492)
Total Ultralife Corporation equity	128,837	125,332
Non-controlling interest	108	95
Total stockholders’ equity	128,945	125,427
Total liabilities and stockholders’ equity	$ 180,551	$ 178,276

XML

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Trade accounts receivable, allowance for doubtful accounts	$ 0.3	$ 0.3
Preferred stock, par value (in dollars per share)	$ 0.1	$ 0.1
Preferred Stock, Shares Authorized (in shares)	1,000,000	1,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.1	$ 0.1
Common Stock, Shares Authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	20,887,446	20,783,607
Common stock, shares outstanding (in shares)	16,451,332	16,347,493
Treasury Stock, Common, Shares (in shares)	4,436,114	4,436,114

XML

Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 41,927	$ 31,916
Cost of products sold	30,457	24,480
Gross profit	11,470	7,436
Operating expenses:
Research and development	1,756	2,032
Selling, general and administrative	5,651	5,378
Total operating expenses	7,407	7,410
Operating income	4,063	26
Interest and financing expense	(520)	(424)
Miscellaneous income (expense)	64	(70)
Total other expense	(456)	(494)
Income (loss) before income taxes	3,607	(468)
Income tax provision (benefit)	703	(133)
Net income (loss)	2,904	(335)
Net income attributable to non-controlling interest	13	11
Net income (loss) attributable to Ultralife Corporation	2,891	(346)
Other comprehensive loss:
Foreign currency translation adjustments	(232)	197
Comprehensive income attributable to Ultralife Corporation	$ 2,659	$ (149)
Net income (loss) per share attributable to Ultralife common stockholders – basic (in dollars per share)	$ 0.21	$ 0.03
Net income (loss) per share attributable to Ultralife common stockholders – diluted (in dollars per share)	$ 0.21	$ 0.03
Weighted average shares outstanding – basic (in shares)	16,396	16,135
Potential common shares (in shares)	122	0
Weighted average shares outstanding - diluted (in shares)	16,518	16,135

XML

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES:
Net income (loss)	$ 2,904	$ (335)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation	740	762
Amortization of intangible assets	228	209
Amortization of financing fees	16	16
Stock-based compensation	161	139
Deferred income taxes	650	(390)
Changes in operating assets and liabilities:
Accounts receivable	(3,562)	3,365
Inventories	(1,699)	(6,026)
Prepaid expenses and other assets	1,102	639
Accounts payable and other liabilities	(621)	256
Net cash used in operating activities	(81)	(1,365)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(372)	(497)
Net cash used in investing activities	(372)	(497)
FINANCING ACTIVITIES:
Borrowings on revolving credit facility	0	2,300
Payments on term loan facility	(500)	(500)
Proceeds from exercise of stock options	685	0
Net cash provided by financing activities	185	1,800
Effect of exchange rate changes on cash	89	(46)
DECREASE IN CASH	(179)	(108)
Cash, Beginning of period	10,278	5,713
Cash, End of period	$ 10,099	$ 5,605

XML

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Including Portion Attributable to Noncontrolling Interest [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2022	20,570,710
Balance at Dec. 31, 2022	$ 2,057	$ 187,405	$ (3,750)	$ (47,951)	$ (21,484)	$ 126	$ 116,403
Net income (loss)				(346)		11	(335)
Stock option exercises (in shares)	0
Stock-based compensation – stock options		138					138
Stock-based compensation – restricted stock		1					1
Foreign currency translation adjustments adjustments			197				197
Balance (in shares) at Mar. 31, 2023	20,570,710
Balance at Mar. 31, 2023	$ 2,057	187,544	(3,553)	(48,297)	(21,484)	137	$ 116,404
Balance (in shares) at Dec. 31, 2023	20,783,607						16,347,493
Balance at Dec. 31, 2023	$ 2,078	189,160	(3,660)	(40,754)	(21,492)	95	$ 125,427
Net income (loss)				2,891		13	$ 2,904
Stock option exercises (in shares)	103,839						103,839
Stock-based compensation – stock options		156					$ 156
Stock-based compensation – restricted stock		5					5
Foreign currency translation adjustments adjustments			(232)				$ (232)
Stock option exercises	$ 11	674			685
Balance (in shares) at Mar. 31, 2024	20,887,446						16,451,332
Balance at Mar. 31, 2024	$ 2,089	$ 189,995	$ (3,892)	$ (37,863)	$ (21,492)	$ 108	$ 128,945

XML

Note 1 - Basis of Presentation

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Business Description and Accounting Policies [Text Block]

1. BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements of Ultralife Corporation and its subsidiaries (the “Company” or “Ultralife”) have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and with the instructions to Rule 8-03 of Regulation S-X. Accordingly, they do not include all the information and notes for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair presentation of the consolidated financial statements have been included. Results for interim periods should not be considered indicative of results to be expected for a full year. Reference should be made to the consolidated financial statements and related notes thereto contained in our Form 10-K for the year ended December 31, 2023.

The December 31, 2023 consolidated balance sheet information referenced herein was derived from audited financial statements but does not include all disclosures required by GAAP.

Certain items previously reported in specific financial statement captions have been reclassified to conform to the current presentation.

Recently Adopted Accounting Guidance

None.

Recent Accounting Guidance Not Yet Adopted

In December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09 "Income Taxes (Topics 740): Improvements to Income Tax Disclosures" to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. ASU 2023-09 is effective for our annual periods beginning January 1, 2025, with early adoption permitted. We are currently evaluating the potential effect that the updated standard will have on our financial statement disclosures.

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Note 2 - Debt

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Debt Disclosure [Text Block]

2. DEBT

On December 13, 2021, Ultralife, Southwest Electronic Energy Corporation, a Texas corporation and wholly owned subsidiary of Ultralife (“SWE”), CLB, INC., a Texas corporation and wholly owned subsidiary of SWE (“CLB”), Ultralife Excell Holding Corp., a Delaware corporation and wholly owned subsidiary of Ultralife (“UEHC”), Ultralife Canada Holding Corp., a Delaware corporation and wholly owned subsidiary of UEHC (“UCHC”), and Excell Battery Corporation USA, a Texas corporation and wholly owned subsidiary of UEHC (“Excell USA”), as borrowers, entered into the Second Amendment Agreement with KeyBank National Association (“KeyBank” or the “Bank”), as lender and administrative agent, to amend the Credit and Security Agreement dated May 31, 2017 as amended by the First Amendment Agreement by and among Ultralife, SWE, CLB and KeyBank dated May 1, 2019 (the “Credit Agreement”). On November 28, 2022, Ultralife, SWE, CLB, UEHC, UCHC, Excell USA, and Excell Battery Canada ULC, a British Columbia unlimited liability corporation and wholly owned subsidiary of UCHC (“Excell Canada”), entered into that certain Third Amendment Agreement with KeyBank, to further amend the Credit Agreement to, among other things, facilitate the joinder of Excell Canada as a guarantor under the Credit Agreement and to replace the LIBOR benchmark thereunder with SOFR (the “Third Amendment Agreement”, and together with the Second Amendment Agreement and the Credit Agreement, the “Amended Credit Agreement”).

The Amended Credit Agreement, among other things, provides for a 5-year, $10,000 senior secured term loan (the “Term Loan Facility”) and extends the term of the $30,000 senior secured revolving credit facility (the “Revolving Credit Facility”, and together with the Term Loan Facility, the “Amended Credit Facilities”) through May 30, 2025. Up to six months prior to May 30, 2025, the Revolving Credit Facility may be increased to $50,000 with the Bank’s concurrence.

As of March 31, 2024, the Company had $5,667 outstanding principal on the Term Loan Facility, $2,000 of which is included in current portion of long-term debt on the balance sheet, and $19,580 outstanding on the Revolving Credit Facility. As of March 31, 2024, total unamortized debt issuance costs of $107, including placement, renewal and legal fees associated with the Amended Credit Agreement, are classified as a reduction of long-term debt on the balance sheet. Debt issuance costs are amortized to interest expense over the term of the Amended Credit Facilities.

The remaining availability under the Revolving Credit Facility is subject to certain borrowing base limits based on trade receivables and inventories.

The Company is required to repay the borrowings under the Term Loan Facility in equal consecutive monthly payments commencing on February 1, 2022, in arrears, together with applicable interest. All unpaid principal and accrued and unpaid interest with respect to the Term Loan Facility is due and payable in full on January 1, 2027. All unpaid principal and accrued and unpaid interest with respect to the Revolving Credit Facility is due and payable in full on May 30, 2025. The Company may voluntarily prepay principal amounts outstanding at any time subject to certain restrictions.

In addition to the customary affirmative and negative covenants, the Company must maintain a consolidated senior leverage ratio, as defined in the Amended Credit Agreement, of equal to or less than 3.5 to 1.0 for the fiscal quarters ending December 31, 2022 and March 31, 2023, and equal to or less than 3.0 to 1.0 for the fiscal quarters ending June 30, 2023 and thereafter. The Company was in full compliance with its covenants under the Amended Credit Agreement as of March 31, 2024.

Borrowings under the Amended Credit Facilities are secured by substantially all the assets of the Company and its subsidiaries.

Upon the effectiveness of the Third Amendment Agreement, interest accrues on outstanding indebtedness under the Amended Credit Facilities at the Daily Simple SOFR Rate, plus an index spread adjustment of 0.10%, plus the applicable margin. The applicable margin ranges from 185 to 215 basis points and is determined based on the Company’s senior leverage ratio.

The Company must pay a fee of 0.15% to 0.25% based on the average daily unused availability under the Revolving Credit Facility.

Payments must be made by the Company to the extent borrowings exceed the maximum amount then permitted to be drawn on the Amended Credit Facilities and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations may be accelerated, and the Bank will have other customary remedies including resort to the security interest the Company provided to the Bank.

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Note 3 - Earnings Per Share

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Earnings Per Share [Text Block]

3. EARNINGS PER SHARE

Basic earnings (loss) per share (“EPS”) is computed by dividing net income (loss) attributable to Ultralife Corporation by the weighted average shares outstanding during the period. Diluted EPS includes the dilutive effect of securities, if any, and is calculated using the treasury stock method.

For the three-month period ended March 31, 2024, there were 539,358 outstanding stock options and 5,229 unvested restricted stock awards included in the calculation of diluted weighted average shares outstanding, as such securities were dilutive, resulting in 122,515 potential common shares included in the calculation of diluted EPS. There were 524,502 outstanding stock options for the three-month period ended March 31, 2024 not included in EPS as the effect would be anti-dilutive.

For the comparable three-month period ended March 31, 2023, there were no outstanding awards included in the calculation of diluted weighted average shares outstanding and no potential common shares included in the calculation of diluted EPS, as no securities were dilutive. There were 1,420,611 outstanding stock options and 2,500 unvested restricted stock awards not included in the calculation of diluted EPS for the three-month period ended March 31, 2023, as the effect would be antidilutive.

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Note 4 - Supplemental Balance Sheet Information

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

4. SUPPLEMENTAL BALANCE SHEET INFORMATION

Fair Value Measurements and Disclosures

The fair value of financial instruments approximated their carrying values at March 31, 2024 and December 31, 2023. The fair value of cash, accounts receivable, accounts payable, accrued liabilities, and the current portion of long-term debt approximates carrying value due to the short-term nature of these instruments.

Cash

The composition of the Company’s cash was as follows:

	March 31,		December 31,
	2024		2023
Cash	$	10,099	$	10,196
Restricted cash		-		82
Total	$	10,099	$	10,278

As December 31, 2023, restricted cash of $82 represented euro-denominated deposits withheld by the Dutch tax authorities and third-party VAT representatives in connection with a previously utilized logistics arrangement in the Netherlands. During the quarter ended March 31, 2024, the deposits were returned to the Company and no longer restricted. As of March 31, 2024, there was no cash classified as restricted cash. Restricted cash as of December 31, 2023 is included as a component of the cash balance for purposes of the consolidated statements of cash flows.

Inventories, Net

Inventories are stated at the lower of cost or net realizable value, net of obsolescence reserves, with cost determined under the first-in, first-out (FIFO) method. The composition of inventories, net was:

	March 31,		December 31,
	2024		2023
Raw materials	$	30,168	$	29,098
Work in process		3,593		3,187
Finished goods		10,060		9,930
Total	$	43,821	$	42,215

Property, Plant and Equipment, Net

Major classes of property, plant and equipment consisted of the following:

	March 31,			December 31,
	2024			2023
Land	$	1,273		$	1,273
Buildings and leasehold improvements		16,007			15,998
Machinery and equipment		57,427			57,584
Furniture and fixtures		2,818			2,845
Computer hardware and software		7,770			7,868
Construction in process		1,695			2,033
		86,990			87,601
Less: Accumulated depreciation		(66,320	)		(66,484	)
Property, plant and equipment, net	$	20,670		$	21,117

Depreciation expense for property, plant and equipment was $740 and $762 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively.

Goodwill

The following table summarizes the goodwill activity by segment for the three-month period ended March 31, 2024.

	Battery & Energy			Communications
	Products			Systems		Total
Balance – December 31, 2023	$	26,078		$	11,493	$	37,571
Effect of foreign currency translation		(72	)		-		(72	)
Balance – March 31, 2024	$	26,006		$	11,493	$	37,499

Other Intangible Assets, Net

The composition of other intangible assets was:

	at March 31, 2024
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,072	$	6,796	$	6,276
Patents and technology		5,597		5,344		253
Trade names		4,645		673		3,972
Trademarks		3,400		-		3,400
Other		1,500		534		966
Total other intangible assets	$	28,214	$	13,347	$	14,867

	at December 31, 2023
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,092	$	6,656	$	6,436
Patents and technology		5,606		5,322		284
Trade names		4,647		647		4,000
Trademarks		3,402		-		3,402
Other		1,500		515		985
Total other intangible assets	$	28,247	$	13,140	$	15,107

The change in the cost of total intangible assets from December 31, 2023 to March 31, 2024 is the effect of foreign currency translations.

Amortization expense for intangible assets was $228 and $209 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively. Amortization included in selling, general and administrative expenses was $203 and $185 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively. Amortization included in research and development expenses was $25 and $24 for the three-month periods ended March 31, 2024 and March 31, 2023, respectively.

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Note 5 - Stock-based Compensation

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Shareholders' Equity and Share-Based Payments [Text Block]

5. STOCK-BASED COMPENSATION

We recorded non-cash stock compensation expense in each period as follows:

	Three-month period ended
	March 31,		March 31,
	2024		2023
Stock options	$	156	$	138
Restricted stock grants		5		1
Total	$	161	$	139

We have stock options outstanding from various stock-based employee compensation plans for which we record compensation cost relating to share-based payment transactions in our financial statements. As of March 31, 2024, there was $699 of total unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted average period of 1.3 years.

The following table summarizes stock option activity for the three-month period ended March 31, 2024:

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at January 1, 2024		1,250,595		$	7.10
Granted		3,460			6.84
Exercised		(103,839	)		6.60
Forfeited or expired		(86,356	)	$	8.96
Outstanding at March 31, 2024		1,063,860		$	7.00		4.22	$	2,258
Vested and expected to vest at March 31, 2024		964,552		$	7.07		4.06	$	1,987
Exercisable at March 31, 2024		604,537		$	7.50		2.92	$	1,018

Cash received from stock option exercises under our stock-based compensation plans for the three-month periods ended March 31, 2024 and March 31, 2023 was $685 and $0, respectively.

Restricted stock awards vest in equal annual installments over three (3) years. Unrecognized compensation cost related to unvested restricted shares at March 31, 2024 and March 31, 2023, respectively, was $31 and $2.

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Note 6 - Income Taxes

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Income Tax Disclosure [Text Block]

6. INCOME TAXES

Our effective tax rate for the three-month periods ended March 31, 2024 and March 31, 2023 was 19.5% and 28.4%, respectively. The period-over-period change was primarily attributable to the geographic mix of our operating results.

As of December 31, 2023, we have domestic net operating loss (“NOL”) carryforwards of $27,200, which expire 2031 through 2035, and domestic tax credits of $2,900, which expire 2028 through 2043, available to reduce future taxable income. As of March 31, 2024, management has concluded it is more likely than not that these domestic NOL and credit carryforwards will be fully utilized.

As of March 31, 2024, for certain past operations in the U.K., we continue to report a valuation allowance for NOL carryforwards of approximately $9,800, nearly all of which can be carried forward indefinitely. Utilization of the net operating losses may be limited due to the change in the past U.K. operation and cannot currently be used to reduce taxable income at our other U.K. subsidiary, Accutronics Ltd. There are no other deferred tax assets related to the past U.K. operations.

As of March 31, 2024, we have not recognized a valuation allowance against our other foreign deferred tax assets, as realization is considered to be more likely than not.

As of March 31, 2024, the Company maintains its assertion that all foreign earnings will be indefinitely reinvested in those operations, other than earnings generated in the U.K.

There were no unrecognized tax benefits related to uncertain tax positions at March 31, 2024 and December 31, 2023.

As a result of our operations, we file income tax returns in various jurisdictions including U.S. federal, U.S. state and foreign jurisdictions. We are routinely subject to examination by taxing authorities in these various jurisdictions. Our U.S. tax matters for 2020 thru 2022 remain subject to IRS examination. Our U.S. tax matters for 2001-2002, 2005-2007, 2009, and 2011-2015 also remain subject to IRS examination due to the remaining availability of net operating loss carryforwards generated in those years. Our U.S. tax matters for 2013 thru 2022 remain subject to examination by various state and local tax jurisdictions. Our tax matters for the years 2013 thru 2022 remain subject to examination by the respective foreign tax jurisdiction authorities.

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Note 7 - Operating Leases

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Lessee, Operating Leases [Text Block]

7. OPERATING LEASES

The Company has operating leases predominantly for operating facilities. As of March 31, 2024, the remaining lease terms on our operating leases range from approximately less than one (1) year to eight (8) years. Lease terms include renewal options reasonably certain of exercise. There is no transfer of title or option to purchase the leased assets upon expiration. There are no residual value guarantees or material restrictive covenants.

The components of lease expense for the current and prior-year comparative periods were as follows:

	Three-month period ended March 31,
	2024		2023
Operating lease cost	$	262	$	241
Variable lease cost		28		28
Total lease cost	$	290	$	269

Supplemental cash flow information related to leases was as follows:

	Three-month period ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	265	$	226
Right-of-use assets obtained in exchange for lease liabilities:	$	-	$	-

Supplemental consolidated balance sheet information related to leases was as follows:

	Balance sheet classification	March 31, 2024			December 31, 2023
Assets:
Operating lease right-of-use asset	Other noncurrent assets	$	3,177		$	3,589
Liabilities:
Current operating lease liability	Accrued expenses and other current liabilities	$	780		$	894
Operating lease liability, net of current portion	Other noncurrent liabilities		2,350			2,644
Total operating lease liability		$	3,130		$	3,538
Weighted-average remaining lease term (years)			5.2			5.3
Weighted-average discount rate			6.3	%		4.5	%

Future minimum lease payments as of March 31, 2024 are as follows:

Maturity of operating lease liabilities
2024	$	620
2025		691
2026		618
2027		639
2028		642
Thereafter		458
Total lease payments		3,668
Less: Imputed interest		(538	)
Present value of remaining lease payments	$	3,130

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Note 8 - Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

8. COMMITMENTS AND CONTINGENCIES

Purchase Commitments

As of March 31, 2024, we have made commitments to purchase approximately $330 of production machinery and equipment.

Product Warranties

We estimate future warranty costs to be incurred for product failure rates, material usage and service costs in the development of our warranty obligations. Estimated future costs are based on actual past experience and are generally estimated as a percentage of sales over the warranty period. Changes in our product warranty liability during the first three months of 2024 and 2023 were as follows:

	Three-month period ended March 31,
	2024			2023
Accrued warranty obligations – beginning	$	547		$	323
Accruals for warranties issued		141			84
Settlements made		(49	)		(21	)
Accrued warranty obligations – ending	$	639		$	386

Contingencies and Legal Matters

We are subject to legal proceedings and claims that arise from time to time in the normal course of business. We believe that the final disposition of any such matters will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. However, recognizing that legal matters are subject to inherent uncertainties, there exists the possibility that ultimate resolution of these matters could have a material adverse impact on the Company’s financial position, results of operations or cash flows. We are not aware of any such situations at this time.

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Note 9 - Revenue Recognition

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

9. REVENUE RECOGNITION

Revenues are generated from the sale of products. Performance obligations are met and revenue is recognized upon transfer of control to the customer, which is generally upon shipment. When contract terms require transfer of control upon delivery at a customer’s location, revenue is recognized on the date of delivery. For products shipped under vendor-managed inventory arrangements, revenue is recognized and billed when the product is consumed by the customer, at which point control has transferred and there are no further obligations by the Company. Revenue is measured as the amount of consideration we expect to receive in exchange for shipped product. Sales, value-added and other taxes billed and collected from customers are excluded from revenue. Customers, including distributors, do not have a general right of return.

Separately priced extended warranty contracts are offered on certain Communications Systems products for a duration of up to eight (8) years. Extended warranties are treated as separate performance obligations and recognized to revenue evenly over the term of the respective contract. Revenue not yet recognized on extended warranty contracts is recorded as deferred revenue on the consolidated balance sheet. For the quarter ended March 31, 2024, revenue recognized on extended warranties was $72.

As of March 31, 2024, there was deferred revenue on extended warranty contracts of $1,335, comprised of $287 expected to be recognized as revenue within one (1) year and classified as accrued expenses and other current liabilities on our consolidated balance sheet, and $1,048 expected to be recognized as revenue over the remaining duration of the respective contracts and classified as other noncurrent liabilities on our consolidated balance sheet.

As of December 31, 2023, there was deferred revenue on extended warranty contracts of $1,407, comprised of $287 expected to be recognized as revenue within one (1) year and classified as accrued expenses and other current liabilities on our consolidated balance sheet, and $1,120 expected to be recognized as revenue evenly over the remaining duration of the respective contracts and classified as other noncurrent liabilities on our consolidated balance sheet.

As of March 31, 2024 and December 31, 2023, the Company had no other unsatisfied performance obligations for contracts with an original expected duration of greater than one year. Pursuant to Topic 606, we have applied the practical expedient with respect to disclosure of the deferral and future expected timing of revenue recognition for transaction price allocated to remaining performance obligations.

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Note 10 - Business Segment Information

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

10. BUSINESS SEGMENT INFORMATION

We report our results in two operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes Lithium 9-volt, cylindrical and various other non-rechargeable batteries, in addition to rechargeable batteries, uninterruptable power supplies, charging systems and accessories. The Communications Systems segment includes RF amplifiers, power supplies, cable and connector assemblies, amplified speakers, equipment mounts, case equipment, man-portable systems, integrated communication systems for fixed or vehicle applications and communications and electronics systems design. We believe that reporting performance at the gross profit level is the best indicator of segment performance. 

Three-month period ended March 31, 2024:

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	34,989	$	6,938	$	-		$	41,927
Segment contribution		8,986		2,484		(7,407	)		4,063
Other expense						(456	)		(456	)
Tax provision						(703	)		(703	)
Non-controlling interest						(13	)		(13	)
Net income attributable to Ultralife Corporation								$	2,891

Three-month period ended March 31, 2023:

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	28,470	$	3,446	$	-		$	31,916
Segment contribution		6,512		924		(7,410	)		26
Other expense						(494	)		(494	)
Tax benefit						133			133
Non-controlling interest						(11	)		(11	)
Net loss attributable to Ultralife Corporation								$	(346	)

The following tables disaggregate our business segment revenues by major source and geography.

Commercial and Government/Defense Revenue Information:

Three-month period ended March 31, 2024:

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	34,989	$	24,140		$	10,849
Communications Systems		6,938		-			6,938
Total	$	41,927	$	24,140		$	17,787
				58	%		42	%

Three-month period ended March 31, 2023:

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	28,470	$	22,219		$	6,251
Communications Systems		3,446		-			3,446
Total	$	31,916	$	22,219		$	9,697
				70	%		30	%

U.S. and Non-U.S. Revenue Information¹:

Three-month period ended March 31, 2024:

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	34,989	$	19,603		$	15,386
Communications Systems		6,938		4,858			2,080
Total	$	41,927	$	24,461		$	17,466
				58	%		42	%

Three-month period ended March 31, 2023:

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	28,470	$	13,768		$	14,702
Communications Systems		3,446		2,877			569
Total	$	31,916	$	16,645		$	15,271
				52	%		48	%

¹ Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects.

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Note 4 - Supplemental Balance Sheet Information (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

	March 31,		December 31,
	2024		2023
Cash	$	10,099	$	10,196
Restricted cash		-		82
Total	$	10,099	$	10,278

Schedule of Inventory, Current [Table Text Block]

	March 31,		December 31,
	2024		2023
Raw materials	$	30,168	$	29,098
Work in process		3,593		3,187
Finished goods		10,060		9,930
Total	$	43,821	$	42,215

Property, Plant and Equipment [Table Text Block]

	March 31,			December 31,
	2024			2023
Land	$	1,273		$	1,273
Buildings and leasehold improvements		16,007			15,998
Machinery and equipment		57,427			57,584
Furniture and fixtures		2,818			2,845
Computer hardware and software		7,770			7,868
Construction in process		1,695			2,033
		86,990			87,601
Less: Accumulated depreciation		(66,320	)		(66,484	)
Property, plant and equipment, net	$	20,670		$	21,117

Schedule of Goodwill [Table Text Block]

	Battery & Energy			Communications
	Products			Systems		Total
Balance – December 31, 2023	$	26,078		$	11,493	$	37,571
Effect of foreign currency translation		(72	)		-		(72	)
Balance – March 31, 2024	$	26,006		$	11,493	$	37,499

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	at March 31, 2024
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,072	$	6,796	$	6,276
Patents and technology		5,597		5,344		253
Trade names		4,645		673		3,972
Trademarks		3,400		-		3,400
Other		1,500		534		966
Total other intangible assets	$	28,214	$	13,347	$	14,867

	at December 31, 2023
			Accumulated
	Cost		Amortization		Net
Customer relationships	$	13,092	$	6,656	$	6,436
Patents and technology		5,606		5,322		284
Trade names		4,647		647		4,000
Trademarks		3,402		-		3,402
Other		1,500		515		985
Total other intangible assets	$	28,247	$	13,140	$	15,107

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Note 5 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

	Three-month period ended
	March 31,		March 31,
	2024		2023
Stock options	$	156	$	138
Restricted stock grants		5		1
Total	$	161	$	139

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at January 1, 2024		1,250,595		$	7.10
Granted		3,460			6.84
Exercised		(103,839	)		6.60
Forfeited or expired		(86,356	)	$	8.96
Outstanding at March 31, 2024		1,063,860		$	7.00		4.22	$	2,258
Vested and expected to vest at March 31, 2024		964,552		$	7.07		4.06	$	1,987
Exercisable at March 31, 2024		604,537		$	7.50		2.92	$	1,018

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Note 7 - Operating Leases (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Lease, Cost [Table Text Block]

	Three-month period ended March 31,
	2024		2023
Operating lease cost	$	262	$	241
Variable lease cost		28		28
Total lease cost	$	290	$	269

Lessee, Lease, Cash Flow Information [Table Text Block]

	Three-month period ended March 31,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	265	$	226
Right-of-use assets obtained in exchange for lease liabilities:	$	-	$	-

Lessee, Lease, Balance Sheet Information [Table Text Block]

	Balance sheet classification	March 31, 2024			December 31, 2023
Assets:
Operating lease right-of-use asset	Other noncurrent assets	$	3,177		$	3,589
Liabilities:
Current operating lease liability	Accrued expenses and other current liabilities	$	780		$	894
Operating lease liability, net of current portion	Other noncurrent liabilities		2,350			2,644
Total operating lease liability		$	3,130		$	3,538
Weighted-average remaining lease term (years)			5.2			5.3
Weighted-average discount rate			6.3	%		4.5	%

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

Maturity of operating lease liabilities
2024	$	620
2025		691
2026		618
2027		639
2028		642
Thereafter		458
Total lease payments		3,668
Less: Imputed interest		(538	)
Present value of remaining lease payments	$	3,130

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Note 8 - Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three-month period ended March 31,
	2024			2023
Accrued warranty obligations – beginning	$	547		$	323
Accruals for warranties issued		141			84
Settlements made		(49	)		(21	)
Accrued warranty obligations – ending	$	639		$	386

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Note 10 - Business Segment Information (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	34,989	$	6,938	$	-		$	41,927
Segment contribution		8,986		2,484		(7,407	)		4,063
Other expense						(456	)		(456	)
Tax provision						(703	)		(703	)
Non-controlling interest						(13	)		(13	)
Net income attributable to Ultralife Corporation								$	2,891

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenues	$	28,470	$	3,446	$	-		$	31,916
Segment contribution		6,512		924		(7,410	)		26
Other expense						(494	)		(494	)
Tax benefit						133			133
Non-controlling interest						(11	)		(11	)
Net loss attributable to Ultralife Corporation								$	(346	)

Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	34,989	$	24,140		$	10,849
Communications Systems		6,938		-			6,938
Total	$	41,927	$	24,140		$	17,787
				58	%		42	%

	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	28,470	$	22,219		$	6,251
Communications Systems		3,446		-			3,446
Total	$	31,916	$	22,219		$	9,697
				70	%		30	%

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	34,989	$	19,603		$	15,386
Communications Systems		6,938		4,858			2,080
Total	$	41,927	$	24,461		$	17,466
				58	%		42	%

	Total Revenue		United States			Non-United States
Battery & Energy Products	$	28,470	$	13,768		$	14,702
Communications Systems		3,446		2,877			569
Total	$	31,916	$	16,645		$	15,271
				52	%		48	%

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Note 2 - Debt (Details Textual) - Amended Credit Agreement [Member] $ in Thousands	Dec. 13, 2021 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023
Debt Issuance Costs, Gross		$ 107
Term Loan Facility [Member] | Long-term Debt, Current Maturities [Member]
Secured Debt, Total		2,000
Revolving Credit Facility [Member]
Secured Debt, Total		5,667
Long-Term Line of Credit, Total		$ 19,580
Maximum Consolidated Senior Leverage Ratio		3	3.5
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.85%
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.15%
KeyBank [Member] | Term Loan Facility [Member]
Debt Instrument, Term	5 years
Debt Instrument, Face Amount	$ 10,000
KeyBank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	30,000
Line Of Credit Facility Maximum Borrowing Capacity Contingent On Bank Approval	$ 50,000

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Note 3 - Earnings Per Share (Details Textual) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Dilutive Securities Included in Computation of Earnings Per Share Amount Stock Option	539,358	0
Dilutive Securities Included in Computation of Earnings Per Share Amount Restricted Stock	5,229
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements	122,515	0
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	524,502	1,420,611

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Note 4 - Supplemental Balance Sheet Information (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Restricted Cash and Cash Equivalents	$ 0		$ 82
Depreciation	740	$ 762
Amortization of Intangible Assets	228	209
Selling, General and Administrative Expenses [Member]
Amortization of Intangible Assets	203	185
Research and Development Expense [Member]
Amortization of Intangible Assets	25	$ 24
NETHERLANDS
Restricted Cash and Cash Equivalents	$ 82

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Note 4 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Cash	$ 10,099	$ 10,196
Restricted cash	0	82
Total	$ 10,099	$ 10,278	$ 5,605	$ 5,713

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Note 4 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Raw materials	$ 30,168	$ 29,098
Work in process	3,593	3,187
Finished goods	10,060	9,930
Total	$ 43,821	$ 42,215

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Note 4 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, plant and equipment, gross	$ 86,990	$ 87,601
Less: Accumulated depreciation	(66,320)	(66,484)
Property, plant and equipment, net	20,670	21,117
Land [Member]
Property, plant and equipment, gross	1,273	1,273
Building and Building Improvements [Member]
Property, plant and equipment, gross	16,007	15,998
Machinery and Equipment [Member]
Property, plant and equipment, gross	57,427	57,584
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,818	2,845
Computer Equipment [Member]
Property, plant and equipment, gross	7,770	7,868
Construction in Progress [Member]
Property, plant and equipment, gross	$ 1,695	$ 2,033

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Note 4 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Balance	$ 37,571
Effect of foreign currency translation	(72)
Balance – March 31, 2024	37,499
Battery & Energy Products Segment [Member]
Balance	26,078
Effect of foreign currency translation	(72)
Balance – March 31, 2024	26,006
Communications Systems Segment [Member]
Balance	11,493
Effect of foreign currency translation	0
Balance – March 31, 2024	$ 11,493

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Note 4 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Cost	$ 28,214	$ 28,247
Accumulated Amortization	13,347	13,140
Net	14,867	15,107
Customer Relationships [Member]
Cost	13,072	13,092
Accumulated Amortization	6,796	6,656
Net	6,276	6,436
Patented Technology [Member]
Cost	5,597	5,606
Accumulated Amortization	5,344	5,322
Net	253	284
Trade Names [Member]
Cost	4,645	4,647
Accumulated Amortization	673	647
Net	3,972	4,000
Trademarks [Member]
Cost	3,400	3,402
Accumulated Amortization	0	0
Net	3,400	3,402
Other Intangible Assets [Member]
Cost	1,500	1,500
Accumulated Amortization	534	515
Net	$ 966	$ 985

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Note 5 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Proceeds from Stock Options Exercised	$ 685	$ 0
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 699
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 3 months 18 days
Restricted Stock [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 31	$ 2
Restricted Stock [Member] | The 2014 Long-term Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	3 years

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Note 5 - Stock-based Compensation - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stock-based compensation expense	$ 161	$ 139
Share-Based Payment Arrangement, Option [Member]
Stock-based compensation expense	156	138
Restricted Stock [Member]
Stock-based compensation expense	$ 5	$ 1

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Note 5 - Stock-based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares
Outstanding, shares (in shares) | shares	1,250,595
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 7.1
Granted, shares (in shares) | shares	3,460
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 6.84
Exercised, shares (in shares) | shares	(103,839)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 6.6
Forfeited or expired, shares (in shares) | shares	(86,356)
Forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares	$ 8.96
Outstanding, shares (in shares) | shares	1,063,860
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 7
Outstanding, weighted average remaining contractual term (Year)	4 years 2 months 19 days
Outstanding, aggregate intrinsic value | $	$ 2,258
Vested and expected to vest, shares (in shares) | shares	964,552
Vested and expected, weighted average exercise price (in dollars per share) | $ / shares	$ 7.07
Vested and expected to vest, weighted average remaining contractual term (Year)	4 years 21 days
Vested and expected to vest, aggregate intrinsic value | $	$ 1,987
Exercisable, shares (in shares) | shares	604,537
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 7.5
Exercisable, weighted average remaining contractual term (Year)	2 years 11 months 1 day
Exercisable, aggregate intrinsic value | $	$ 1,018

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Note 6 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Effective Income Tax Rate Reconciliation, Percent	19.50%	28.40%
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards			27,200
Tax Credit Carryforward, Amount			$ 2,900
Open Tax Year	2005 2006 2007 2009 2011 2012 2013 2014 2015
Foreign Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 0
Foreign Tax Jurisdiction [Member] | His Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards	$ 9,800

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Note 7 - Operating Leases (Details Textual)	Mar. 31, 2024
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	8 years

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Note 7 - Operating Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating lease cost	$ 262	$ 241
Variable lease cost	28	28
Total lease cost	$ 290	$ 269

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Note 7 - Operating Leases - Supplement Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating cash flows from operating leases	$ 265	$ 226
Right-of-use assets obtained in exchange for lease liabilities:	$ 0	$ 0

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Note 7 - Operating Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Weighted-average remaining lease term (years) (Year)	5 years 2 months 12 days	5 years 3 months 18 days
Weighted-average discount rate	6.30%	4.50%
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	$ 3,177	$ 3,589
Accrued Expenses and Other Current Liabilities [Member]
Current operating lease liability	780	894
Other Noncurrent Liabilities [Member]
Operating lease liability, net of current portion	2,350	2,644
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Total operating lease liability	$ 3,130	$ 3,538

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Note 7 - Operating Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
2024	$ 620
2025	691
2026	618
2027	639
2028	642
Thereafter	458
Total lease payments	3,668
Less: Imputed interest	(538)
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Present value of remaining lease payments	$ 3,130	$ 3,538

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Note 8 - Commitments and Contingencies (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Capital Addition Purchase Commitments [Member]
Long-Term Purchase Commitment, Amount	$ 330

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Note 8 - Commitments and Contingencies - Changes in Product Warranty Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accrued warranty obligations – beginning	$ 547	$ 323
Accruals for warranties issued	141	84
Settlements made	(49)	(21)
Accrued warranty obligations – ending	$ 639	$ 386

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Note 9 - Revenue Recognition (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Extended Product Warranty Accrual	$ 1,335	$ 1,407
Accrued Expenses and Other Current Liabilities [Member]
Extended Product Warranty Accrual, Current	287	287
Other Noncurrent Liabilities [Member]
Extended Product Warranty Accrual, Noncurrent	1,048	$ 1,120
Certain Communications Systems Products [Member]
Contract with Customer, Liability, Revenue Recognized	$ 72
Certain Communications Systems Products [Member] | Maximum [Member]
Extended Product Warranty, Term	8 years

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Note 10 - Business Segment Information (Details Textual)	3 Months Ended
	Mar. 31, 2024
Number of Operating Segments	2

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Note 10 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 41,927	$ 31,916
Segment contribution	4,063	26
Other income (expense)	(456)	(494)
Income tax provision (benefit)	(703)	133
Non-controlling interest	(13)	(11)
Net loss attributable to Ultralife	2,891	(346)
Battery & Energy Products Segment [Member]
Revenues	34,989	28,470
Segment contribution	8,986	6,512
Communications Systems Segment [Member]
Revenues	6,938	3,446
Segment contribution	2,484	924
Corporate Segment [Member]
Revenues	0	0
Segment contribution	(7,407)	(7,410)
Other income (expense)	(456)	(494)
Income tax provision (benefit)	(703)	133
Non-controlling interest	$ (13)	$ (11)

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Note 10 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 41,927	$ 31,916
UNITED STATES
Revenues	$ 24,461	$ 16,645
Revenue, percentage	58.00%	52.00%
Non-US [Member]
Revenues	$ 17,466	$ 15,271
Revenue, percentage	42.00%	48.00%
Commercial [Member]
Revenues	$ 24,140	$ 22,219
Revenue, percentage	58.00%	70.00%
Government & Defense [Member]
Revenues	$ 17,787	$ 9,697
Revenue, percentage	42.00%	30.00%
Battery & Energy Products Segment [Member]
Revenues	$ 34,989	$ 28,470
Battery & Energy Products Segment [Member] | UNITED STATES
Revenues	19,603	13,768
Battery & Energy Products Segment [Member] | Non-US [Member]
Revenues	15,386	14,702
Battery & Energy Products Segment [Member] | Commercial [Member]
Revenues	24,140	22,219
Battery & Energy Products Segment [Member] | Government & Defense [Member]
Revenues	10,849	6,251
Communications Systems Segment [Member]
Revenues	6,938	3,446
Communications Systems Segment [Member] | UNITED STATES
Revenues	4,858	2,877
Communications Systems Segment [Member] | Non-US [Member]
Revenues	2,080	569
Communications Systems Segment [Member] | Commercial [Member]
Revenues	0	0
Communications Systems Segment [Member] | Government & Defense [Member]
Revenues	$ 6,938	$ 3,446