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):

                                  May 21, 2003

                            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
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               (Address of principal executive offices)    (Zip Code)

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




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 May 21, 2003

Item 9. Regulation FD Disclosure.

     The Company announced that it has been awarded a contract for its BA-5390/U
battery  (previously  UBI5390) valued at approximately $19 million,  by the U.S.
Army Communications  Electronics Command (CECOM).  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: May 21, 2003                         By: /s/Robert W. Fishback
-------------------                             -------------------------
                                                Robert W. Fishback
                                                Vice President - Finance and
                                                Chief Financial Officer


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                                Index to Exhibits

(99) Additional Exhibits

     99.1 Press Release dated May 21, 2003


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