Exhibit 99.1

                     Ultralife Batteries to Report
Third Quarter Results on November 3, 2005; Investor Conference Call to
             be Webcast at Ultralife Batteries' Web Site

    NEWARK, N.Y.--(BUSINESS WIRE)--Oct. 20, 2005--Ultralife Batteries,
Inc. (NASDAQ: ULBI) will report its third quarter 2005 results for the
period ended October 1, 2005 before the market opens on Thursday,
November 3, 2005. Ultralife management will host an investor
conference call at 10:00 AM ET also on November 3, 2005. Investors are
invited to access a live webcast of the conference call in the
Investor Info - Event Calendar section of the company's website:
http://investor.ultralifebatteries.com. A replay of the webcast will
be available shortly after the call at the same location and will be
archived for 90 days.

    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, General Motors, Energizer,
Kidde Safety, Lowe's, Radio Shack and the national defense agencies of
the United States, United Kingdom and Germany, 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 on Ultralife is available at the Company's
web site, www.ultralifebatteries.com.



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