Exhibit 99

              Certification pursuant to Section 1350 of Chapter 63
                     of Title 18 of the United States Code

I, John D. Kavazanjian, President and Chief Executive Officer of Ultralife
Batteries, Inc., hereby certify that (i) the Quarterly Report on Form 10-Q/A for
the period ended March 31, 2002 attached hereto fully complies with the
requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934,
and (ii) the information contained in the attached Form 10-Q/A fairly presents,
in all material respects, the financial conditions and results of operations of
Ultralife Batteries, Inc. for the period presented therein.


Dated:  April 11, 2003                    /s/ John D. Kavazanjian
                                          -----------------------
                                          John D. Kavazanjian
                                          President and Chief Executive Officer


              Certification pursuant to Section 1350 of Chapter 63
                     of Title 18 of the United States Code

I, Robert W. Fishback, Vice President of Finance and Chief Financial Officer of
Ultralife Batteries, Inc., hereby certify that (i) the Quarterly Report on Form
10-Q/A for the period ended March 31, 2002 attached hereto fully complies with
the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of
1934, and (ii) the information contained in the attached Form 10-Q/A fairly
presents, in all material respects, the financial conditions and results of
operations of Ultralife Batteries, Inc. for the period presented therein.

Dated:  April 11, 2003                    /s/ Robert W. Fishback
                                          ----------------------
                                          Robert W. Fishback
                                          Vice President - Finance and Chief
                                           Financial Officer


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