EXHIBIT 10.37 Firm-Fixed-Price Subcontract

EXHIBIT 10.37

Title Page

Firm-Fixed-Price Subcontract

This SUBCONTRACT is entered into as of 04 February 2005, between Northrop Grumman Space & Mission Systems Corp., an Ohio corporation, by and through Space Technology sector, with an office at One Space Park, Redondo Beach, California 90278 (hereinafter also called “the Buyer”) and Maxwell Technologies, Inc., a Delaware corporation, with an office at 9244 Balboa Avenue, San Diego, California 92133 (hereinafter also called “the Seller”, “the Contractor”, or “the Subcontractor”).

In consideration of the mutual promises, covenants, and agreements herein set forth, the parties agree that the Seller shall furnish and deliver to the Buyer all the supplies and perform all the services set forth in this Subcontract, for the consideration stated herein.

The rights and obligations of the parties to this Subcontract shall be subject to, and governed by, the Schedule, the Subcontract clauses of Systems 3392, and other documents or specifications attached hereto or referenced herein.

This Subcontract sets forth the entire agreement and supersedes any and all prior agreements of the parties, whether written or oral, concerning the subject matter hereof.

Note: Article XXV hereof contains information concerning seller’s obligations with regard to prohibited materials in products to be delivered hereunder.

This Subcontract shall not be varied or changed in its terms or conditions by any oral agreement or representation, or otherwise than by an instrument in writing of even or subsequent date thereto, properly executed.

The subcontract title used hereinabove and the article titles used hereinbelow are for convenience only and shall in no way be construed as an indication of meaning for interpretive purposes.

Subcontract No. 65096QDM5S

Schedule

Article I—Scope of Work

A. The Seller, as an independent contractor and not as an agent of the Buyer, shall, in conformance with the terms and conditions more particularly set forth herein, provide the necessary personnel, material, and facilities and do all things necessary or incidental to accomplish the effort set forth in the Statement of Work identified and made a part of this Subcontract under Article No. XXVI hereof.

B. The Buyer was issued the prime contract or higher-tier subcontract identified on the title page of this Subcontract (hereinbelow called the aforementioned contract). The Seller’s supplies and services deliverable under this Subcontract will be utilized by the Buyer as part of the basis on which the Buyer intends to fulfill its obligations under the aforementioned contract.

The Buyer is relying on the Seller’s agreement as set forth in this Subcontract and on the Seller’s performance of same by timely delivery or performance and may be unable to fulfill its obligations under the aforementioned contract if the Seller should fail to do so.

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Subcontract No. 65096QDM5S

Article II—Period of Performance

The Seller shall perform the work under this Subcontract during the period 04 February 2005 to 31 August 2007 and shall deliver the required supplies or any services in accordance with the delivery schedule set forth in the Statement of Work or elsewhere within this Subcontract. Time is of the essence in the Seller’s performance of this Subcontract.

Article III—Place of Performance, Inspection, and Acceptance

A. The Seller shall perform the work under this Subcontract at 9244 Balboa Avenue, San Diego California or at such other substitute or supplemental locations as may be agreed to in writing by the parties.

B. Final inspection and the Buyer’s acceptance of all supplies and services and other effort described herein as deliverable shall be made at Buyer’s facility in Redondo Beach, California.

Article IV—Packaging, Packing, FOB Point, and Shipping

A. The supplies to be delivered hereunder are to be packaged and packed in accordance with the Statement of Work.

B. The supplies to be delivered hereunder are to be shipped FOB Destination in accordance with the following:

NGST, One Space Park, Redondo Beach, CA 90278

Article V—Type of Subcontract

The subcontract work is to be performed on a firm-fixed-price (FFP) (FAR 16.202) basis (except to any extent that may be otherwise expressly provided for herein).

Article VI—Key Personnel

The Seller’s employees identified below are key personnel, important to the successful performance of the work under this Subcontract. The Seller agrees to assign these employees to the performance of the work. Whenever, for any reason, one or more of these employees becomes unavailable for assignment for work under this Subcontract, the Seller shall replace each such employee with a person of comparable ability as acceptable to the Buyer. The Seller shall inform the Buyer in advance, in writing, whenever such an employee change becomes necessary.

Robert Hillman – Electrical Engineer

Mark Conrad – Software Engineer

Janet Patterson – Mechanical Engineer Manager

Article VII—Subcontract Reports

The Seller shall furnish reports, data, and other documentation as identified in the Statement of Work.

Article VIII—Consideration and Payment

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Subcontract No. 65096QDM5S

SLIN 001- Basic (Flight 1 and 2)

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SLIN 002 - Flight 3 Option

Option may be exercised on or before 01 December 2009

SLIN 003 - Flight 4 Option

Option may be exercised on or before 01 December 2010