UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 14, 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) 1 Item 7. 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 April 14, 2004 Item 9. Regulation FD Disclosure. The Company will report its first quarter 2004 results for the period ended March 27, 2004 before the market opens on Thursday, April 29, 2004. Refer to the attached Exhibit 99.1 for the entire text of the release, which Exhibit is being furnished but not filed in accordance with Regulation FD. 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: April 14, 2004 By: /s/Peter F. Comerford Peter F. Comerford Vice President - Administration & General Counsel 2 Index to Exhibits (99) Additional Exhibits 99.1 Press Release dated April 14, 2004 3