Exhibit 32.1

                           Section 1350 Certification

Pursuant to 18 U.S.C.  Section 1350,  as adopted  pursuant to Section 906 of the
Sarbanes-Oxley  Act of 2002 ("Section  906"),  John D. Kavazanjian and Robert W.
Fishback,  the President and Chief Executive Officer and Vice  President-Finance
and Chief Financial Officer, respectively, of Ultralife Batteries, Inc., certify
that ( i ) the Annual  Report on Form 10-K for the year ended  December 31, 2003
fully complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 and (ii) the  information  contained in such report  fairly
presents,  in all material  respects,  the  financial  condition  and results of
operations of Ultralife Batteries, Inc.

A signed  original of this  written  statement  required by Section 906 has been
provided  to  Ultralife  Batteries,  Inc.  and  will be  retained  by  Ultralife
Batteries,  Inc. and furnished to the Securities and Exchange  Commission or its
staff upon request.

Date: March 10, 2004                       /s/ John D. Kavazanjian
                                           -------------------------------------

                                           John D. Kavazanjian
                                           President and Chief Executive Officer

Date: March 10, 2004                       /s/ Robert W. Fishback
                                           -------------------------------------

                                           Robert W. Fishback
                                           Vice President-Finance and
                                           Chief Financial Officer


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