Exhibit 99.1

  Ultralife Batteries to Hold Annual Meeting of Shareholders on June 9, 2005;
                    Investors Invited to Access Live Webcast

     NEWARK, N.Y.--(BUSINESS WIRE)--May 27, 2005--Ultralife Batteries, Inc.
(NASDAQ: ULBI) will hold its annual meeting of shareholders for the period
ending December 31, 2004, at the Company's headquarters in Newark, New York on
Thursday, June 9, 2005 at 10:30 a.m. Investors who are unable to attend in
person are invited to view a live webcast of the meeting at the Investor Info
section of Ultralife's web site at www.ultralifebatteries.com. A replay of the
meeting will be available at Ultralife's web site on June 10.

     About Ultralife Batteries, Inc.

     Ultralife is a global provider of power solutions for diverse applications.
The company develops, manufactures and markets a wide range of non-rechargeable
and rechargeable batteries, charging systems and accessories for use in
military, industrial and consumer portable electronic products. Through its
range of standard products and engineered solutions, Ultralife is able to
provide the next generation of power systems. Industrial, retail and government
customers include General Dynamics, Philips Medical Systems, Energizer, Kidde
Safety, Lowe's, Radio Shack and the national defense agencies of the United
States and United Kingdom, among others.
     Ultralife's headquarters, principal manufacturing and research facilities
are in Newark, New York, near Rochester. Ultralife (UK) Ltd., a second
manufacturing facility, is located in Abingdon, England. Both facilities are
ISO-9001 certified. Detailed information about Ultralife is available at
www.ultralifebatteries.com.
     Ultralife(R) is a registered trademark of Ultralife Batteries, Inc.


     CONTACT: Ultralife Batteries, Inc.
              Robert Fishback, 315-332-7100
              bfishback@ulbi.com
              or
              Investor Relations Contact:
              Lippert/Heilshorn & Associates, Inc.
              Jody Burfening, 212-838-3777
              jburfening@lhai.com
              or
              Media Contact:
              Lippert/Heilshorn & Associates, Inc.
              Chenoa Taitt, 212-201-6635
              ctaitt@lhai.com