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):

                                  July 29, 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
                 -----------------------------------------------
               (Address of principal executive offices) (Zip Code)

                                 (315) 332-7100
              (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 July 29, 2003

Item 9. Regulation FD Disclosure.

The Company announced that it will report its second quarter 2003 results for
the period ended June 28, 2003 before the market opens on Thursday, August 7,
2003. Ultralife management will host an investor conference call at 10:00AM ET
also on August 7, 2003. 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: July 29, 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 July 29, 2003


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