Exhibit 10.1

EXECUTION

SPONSOR SUPPORT AGREEMENT

This Sponsor Support Agreement dated as of May 11, 2022 (this “Agreement”) is among Kensington Capital Sponsor IV LLC, a Delaware limited liability company (“Sponsor”), Kensington Capital Acquisition Corp. IV (“Kcompany”), a Cayman Islands exempted company incorporated with limited liability (which shall transfer by way of continuation to and domesticate as a Delaware corporation in accordance with the BCA (as defined herein), and Amprius Technologies, Inc., a Delaware corporation (the “Company”). Capitalized terms used but not defined in this Agreement have the meanings assigned to them in the Business Combination Agreement, dated as of the date of this Agreement (the “BCA”), among Kcompany, Kensington Capital Merger Sub Corp., a Delaware corporation and wholly owned subsidiary of Kcompany (“Merger Sub”), and the Company.

WHEREAS, Sponsor owns (a) 9,857,142 shares of Kcompany Class B Common Stock (including any shares of Kcompany Class A Common Stock issued upon conversion of such shares, the “Founder Shares”), and (b) 3,267,500 Kcompany Original Units, which include 3,267,500 shares of Kcompany Class A Common Stock (such shares of Kcompany Class A Common Stock, together with the Founder Shares, the “Kcompany Common Stock”);

WHEREAS, in connection with Kcompany’s initial public offering, Kcompany, Sponsor and certain officers and directors of Kcompany (collectively, the “Insiders”) entered into a letter agreement, dated as of March 1, 2022 (as amended, the “Insider Letter”), pursuant to which Sponsor and the Insiders agreed to certain voting requirements, transfer restrictions and waiver of redemption rights with respect to the Kcompany securities owned by them;

WHEREAS, concurrently with the execution and delivery of this Agreement, Kcompany, Merger Sub and the Company are entering into the BCA, which provides, among other things, that, upon the terms and subject to the conditions thereof, Merger Sub will be merged with and into the Company (the “Merger”), with the Company surviving the Merger as a wholly owned subsidiary of Kcompany; and

WHEREAS, as a condition and inducement to the Company’s willingness to enter into the BCA, the Company has required that Sponsor enter into this Agreement.

NOW, THEREFORE, in consideration of the representations, warranties, covenants and agreements contained herein and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, and subject to the conditions set forth herein, the parties hereto agree as follows:

1. Enforcement of Sponsor Voting Requirements, Transfer Restrictions and Redemption Waiver. During the period beginning on the date of this Agreement and ending on the earlier of (x) the Effective Time and (y) the termination of the BCA in accordance with its terms, for the benefit of the Company, (a) Sponsor agrees that (i) it will comply with, and perform all of its obligations, covenants and agreements set forth in, the Insider Letter in all material respects, including voting in favor of the Merger and the other Transactions and not redeeming its shares of Kcompany Class A Common Stock in connection with the Transactions, and (ii) it will not make any Transfers of Kcompany Class B Common Stock (except for Transfers permitted by Section 8(c) of the Insider Letter provided that the party to which such shares are transferred enters into a joinder to this Agreement); (b) Kcompany agrees to enforce the Insider Letter in accordance with its terms; and (c) each of Sponsor and Kcompany agree (i) that the prior written consent of the Company will be required in addition to the prior written consent of the

Representatives (as defined in the Insider Letter) for any of the matters described in Section 4 of the Insider Letter (except for Transfers permitted by Section 8(c) of the Insider Letter provided that the party to which such shares are transferred enters into a joinder to this Agreement), and (ii) not to amend, modify or waive any provision of the Insider Letter without the prior written consent of the Company.

Each of Kcompany and the Sponsor (on behalf of itself and its Permitted Transferees) further agrees that, as of the Effective Time, (a) the Sponsor will be subject to and bound by the transfer restrictions contained in Section 6.8 of the bylaws of Kcompany to be in effect as of the Effective Time, and (b) the transfer restrictions set forth in Section 8(a) of the Insider Letter shall cease and be of no further effect. The Insider Letter otherwise remains in full force and effect.

2. General.

a) Termination. This Agreement shall terminate on the earlier of (x) the Effective Time and (y) the termination of the BCA in accordance with its terms, and upon such termination this Agreement shall be null and void and of no effect whatsoever, and the parties hereto shall have no obligations under this Agreement; provided, however, that no termination of this Agreement shall relieve or release a party from any obligations or liabilities arising out of such party’s breaches of this Agreement prior to such termination.

b) Notices. All notices, requests, claims, demands and other communications hereunder shall be in writing and shall be given (and shall be deemed to have been duly given upon receipt) by delivery in person, by email or by registered or certified mail (postage prepaid, return receipt requested) to the respective parties at the following addresses (or at such other address for a party as shall be specified in a notice given in accordance with this Section 2(b)):

if to Kcompany, to it at:

Kensington Capital Acquisition Corp. IV

1400 Old Country Road, Suite 301

Westbury, NY 11590

Attention: Justin Mirro

Email: justin@Kensington-cap.com

with a copy (which shall not constitute notice) to:

Hughes Hubbard & Reed LLP

One Battery Park Plaza

New York, NY 10004

Attention: Charles A. Samuelson

Email: chuck.samuelson@hugheshubbard.com

if to the Sponsor, to it at:

c/o Kensington Capital Sponsor IV LLC

1400 Old Country Road, Suite 301

Westbury, NY 11590

Attention: Justin Mirro

Email: justin@Kensington-cap.com

with a copy (which shall not constitute notice) to:

Hughes Hubbard & Reed LLP

One Battery Park Plaza

New York, NY 10004

Attention: Charles A. Samuelson

Email: chuck.samuelson@hugheshubbard.com

if to the Company or Holdco, to it at:

Amprius Technologies, Inc.

1180 Page Ave

Fremont, CA 94538

Attention: Dr. Kang Sun

with a copy (which shall not constitute notice) to:

Wilson Sonsini Goodrich & Rosati

650 Page Mill Road

Palo Alto, CA 94304

Attention: Michael J. Danaher

Email: mdanaher@wsgr.com

c) Severability. If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule of law, or public policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect so long as the economic or legal substance of the Transactions is not affected in any manner materially adverse to any party. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the Transactions be consummated as originally contemplated to the fullest extent possible.

d) Entire Agreement; Assignment. This Agreement, the BCA and the Ancillary Agreements constitute the entire agreement among the parties with respect to the subject matter hereof and supersede, except as set forth in Section 7.04(b) of the BCA, all prior agreements and undertakings, both written and oral, among the parties, or any of them, with respect to the subject matter hereof, except for the Confidentiality Agreement. No party hereto may assign either this Agreement or any of its rights, interests, or obligations hereunder without the prior written consent of the other parties; provided, however, that in the event that Sponsor transfers any of its Kcompany Common Stock, Kcompany Private Placement Warrants or other Kcompany securities to any Permitted Transferee in accordance with the Insider Letter and this Agreement, Sponsor may, by providing notice to Kcompany and the Company prior to or promptly after such transfer, transfer its rights and obligations under this Agreement with respect to such securities to such Permitted Transferee so long as such Permitted Transferee agrees in writing to be bound by the terms of this Agreement that apply to Sponsor hereunder with respect to such securities. Any purported assignment in violation of this Section 2(d) shall be void and ineffectual and shall not operate to transfer or assign any interest or title to the purported assignee. This Agreement shall be binding on the undersigned and their respective successors and permitted assigns.

e) Parties in Interest. This Agreement shall be binding upon and inure solely to the benefit of each party hereto (and their permitted assigns), and nothing in this Agreement, express or implied, is intended to or shall confer upon any other person any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement.

f) Governing Law; Jurisdiction; Waiver of Jury Trial. Sections 10.06 and 10.07 of the BCA shall apply to this Agreement mutatis mutandis.

g) Headings. The descriptive headings contained in this Agreement are included for convenience of reference only and shall not affect in any way the meaning or interpretation of this Agreement.

h) Counterparts. This Agreement may be executed and delivered (including by facsimile or portable document format (pdf) transmission) in one or more counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original but all of which taken together shall constitute one and the same agreement.

i) Specific Performance. The parties agree that irreparable damage would occur if any provision of this Agreement were not performed in accordance with the terms hereof, and, accordingly, that the parties shall be entitled to an injunction or injunctions to prevent breaches of this Agreement or to enforce specifically the performance of the terms and provisions hereof in the Court of Chancery of the State of Delaware or, if that court does not have jurisdiction, any court of the United States located in the State of Delaware without proof of actual damages or otherwise, in addition to any other remedy to which they are entitled at law or in equity as expressly permitted in this Agreement. Each of the parties hereby further waives (i) any defense in any action for specific performance that a remedy at law would be adequate and (ii) any requirement under any Law to post security or a bond as a prerequisite to obtaining equitable relief.

j) Expenses. Except as set forth in the BCA, all expenses incurred in connection with this Agreement and the Transactions shall be paid by the party incurring such expenses, whether or not the Merger or any other Transaction is consummated.

k) Amendment. This Agreement may be amended in writing by the parties hereto at any time prior to the Effective Time. This Agreement may not be amended except by an instrument in writing signed by each of the parties hereto.

l) Waiver. Any party to this Agreement may, at any time prior to the Effective Time, (i) extend the time for the performance of any obligation or other act of the other parties hereto, (ii) waive any inaccuracy in the representations and warranties of another party hereto contained herein or in any document delivered by another party pursuant hereto and (iii) waive compliance with any agreement of another party hereto or any condition to its own obligations contained herein. Any such extension or waiver shall be valid if set forth in an instrument in writing signed by the party or parties to be bound thereby.

m) Interpretation. The parties have participated jointly in the negotiation and drafting of this Agreement. If any ambiguity or question of intent arises, this Agreement will be construed as if drafted jointly by the parties and no presumption or burden of proof will arise favoring or disfavoring any party because of the authorship of any provision of this Agreement. Unless the context of this Agreement clearly requires otherwise, use of the masculine gender shall include the feminine and neutral genders and vice versa, and the definitions of terms contained in this Agreement are applicable to the singular as well as the plural forms of such terms. The words “includes” or “including” shall mean “including without limitation.” The words “hereof,” “hereby,” “herein,” “hereunder” and similar terms in this Agreement shall

refer to this Agreement as a whole and not any particular section or article in which such words appear, the word “extent” in the phrase “to the extent” shall mean the degree to which a subject or other thing extends and such phrase shall not mean simply “if.” Any reference to a Law shall include any rules and regulations promulgated thereunder, and shall mean such Law as from time to time amended, modified or supplemented. References herein to any contract (including this Agreement) mean such contract as amended, supplemented or modified from time to time in accordance with the terms thereof.

n) No Joint Venture. Nothing contained in this Agreement shall be deemed or construed as creating a joint venture or partnership between any of the parties hereto. No party is by virtue of this Agreement authorized as an agent, employee or legal representative of any other party. Without in any way limiting the rights or obligations of any party hereto under this Agreement, prior to the Effective Time, (i) no party shall have the power by virtue of this Agreement to control the activities and operations of any other and (ii) no party shall have any power or authority by virtue of this Agreement to bind or commit any other party. No party shall hold itself out as having any authority or relationship in contravention of this Section 2(n).

o) Capacity as Shareholder. Sponsor signs this Agreement solely in its capacity as a shareholder of Kcompany, and not in its capacity as a director (including “director by deputization”), officer or employee of Kcompany, if applicable. Nothing herein shall be construed to limit or affect any actions or inactions by Sponsor or any representative of Sponsor, as applicable, serving as a director of Kcompany or any subsidiary of Kcompany, acting in such person’s capacity as a director or officer of Kcompany or any subsidiary of Kcompany (it being understood and agreed that the BCA contains provisions that govern the actions or inactions by the directors of the Company with respect to the Merger and Transactions).

[The next page is the signature page]

IN WITNESS WHEREOF, the parties hereto have executed this Sponsor Support Agreement as of the date first written above.

KENSINGTON CAPITAL ACQUISITION CORP. IV

By:	/s/ Justin Mirro
	Name: Justin Mirro
	Title: Chairman and Chief Executive Officer

KENSINGTON CAPITAL SPONSOR IV LLC

By:	Kensington Capital Partners, LLC
Its:	Managing Member
By:	/s/ Justin Mirro
	Name: Justin Mirro
	Title: Managing Member

AMPRIUS TECHNOLOGIES, INC.

By:	/s/ Kang Sun
	Name: Kang Sun
	Title: Chief Executive Officer

[Signature Page to Sponsor Support Agreement]