8-K

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 Current Report
     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

                Date of Report (Date of earliest event reported):

                                December 28, 2004

                            ULTRALIFE BATTERIES, INC.
             (Exact name of registrant as specified in its charter)

                                    Delaware
         (State or other jurisdiction of incorporation or organization)

       0-20852                                            16-1387013
       -------                                            ----------
(Commission File Number)                    (I.R.S. Employer Identification No.)

                 2000 Technology Parkway, Newark, New York    14513
               -------------------------------------------------------
               (Address of principal executive offices)     (Zip Code)

                                 (315) 332-7100
                                 --------------
              (Registrant's telephone number, including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17
    CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
    CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
    Exchange Act (17 CFR 240.14d-2(b)

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
    Exchange Act (17 CFR 240.13e-4(c))




Item 7.01. Regulation FD Disclosure.

Ultralife Batteries, Inc. (the "Company") announced that it will host a
conference call on January 4th, 2005, at 9:00 a.m. ET, to discuss the Next-Gen
II Phase IV award by the US Defense Department. The Company's press release is
attached as Exhibit 99.1 to this Form 8-K, and the information set forth therein
is furnished under item 7.01.


Item 9.01. Financial Statements, Pro Forma Financials and Exhibits.

(a)  Financial Statements of Business Acquired.

     Not applicable.

(b)  Pro Forma Financial Information.

     Not applicable.

(c)  Exhibits.

     99.1  Press Release dated December 28, 2004




                                    SIGNATURE

     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 hereunto duly authorized.

                                          ULTRALIFE BATTERIES, INC.

Dated: December 28, 2004                  By: /s/ Peter F. Comerford
                                              ----------------------
                                              Vice President of Administration &
                                              General Counsel




                                INDEX TO EXHIBITS

(99) Additional Exhibits

99.1 Press Release dated December 28, 2004

EX-99.1

                                                                    Exhibit 99.1

Ultralife Batteries Inc. to Host Investor/Analyst Conference Call on January 4,
2005; Management to Discuss Next-Gen II Phase IV Award

    NEWARK, N.Y.--(BUSINESS WIRE)--Dec. 28, 2004--Ultralife Batteries,
Inc. (NASDAQ: ULBI) will host a conference call on January 4th, 2005,
at 9:00 a.m. ET, to discuss the Next-Gen II Phase IV award by the US
Defense Department. These contracts, which could reach a maximum value
of $286 million, are for the production of five types of primary
(non-rechargeable) lithium-manganese dioxide batteries for the U.S.
Military. The company issued a press release on December 23, 2004 to
announce this award. A copy of the release can be viewed in the
Investor Information - Press Releases section of the company's website
at http://www.ultralifebatteries.com/invest.asp.
    Management will host a Q & A session during the call. Investors
are invited to access a live webcast of the conference call in the
Investor Information - Event Calendar section of the company's
website: http://www.ultralifebatteries.com/invest.asp. A replay of the
webcast will be available shortly after the call at the same location
and will be archived for 90 days.

    About Ultralife Batteries, Inc.

    Ultralife is a leading developer, manufacturer, and marketer of
standard and customized lithium primary (non-rechargeable), lithium
ion and lithium polymer rechargeable batteries. Ultralife's
high-energy batteries use advanced lithium technology and are used in
military, industrial and consumer portable electronic products.
Through its range of standard products and ability to customize for a
wide range of applications, Ultralife is able to provide the next
generation of battery solutions. OEM, retail and government customers
include Energizer, Kidde Safety, Philips Medical Systems, Radio Shack
and the national defense agencies of the United States and United
Kingdom, among others.
    Ultralife's headquarters, principal manufacturing and research
facilities are in Newark, New York, near Rochester. Ultralife (UK)
Ltd., a second manufacturing facility, is located in Abingdon, U.K.
Both facilities are ISO-9001 certified. Detailed information about
Ultralife is available at www.ultralifebatteries.com.

    This press release may contain forward-looking statements based on
current expectations that involve a number of risks and uncertainties.
The potential risks and uncertainties that could cause actual results
to differ materially include: worsening global economic conditions,
increased competitive environment and pricing pressures, disruptions
related to restructuring actions and delays. Further information on
these factors and other factors that could affect Ultralife's
financial results is included in Ultralife's Securities and Exchange
Commission (SEC) filings, including the latest Annual Report on Form
10-K.
    Ultralife(R) is a registered trademark of Ultralife Batteries,
Inc.

    CONTACT: Ultralife Batteries, Inc.
             Company Contact:
             Peter Comerford, 315-332-7100
             pcomerford@ulbi.com
             or
             Lippert/Heilshorn & Associates, Inc.
             Investor Relations Contact:
             Jody Burfening, 212-838-3777
             jburfening@lhai.com
             or
             Media Contact:
             Chenoa Taitt, 212-201-6635
             ctaitt@lhai.com