Exhibit 99.1

       Ultralife Batteries to Report First Quarter Results on May 4, 2006;
     Investor Conference Call to Be Webcast at Ultralife Batteries' Web Site


     NEWARK, N.Y.--(BUSINESS WIRE)--April 20, 2006--Ultralife Batteries, Inc.
(NASDAQ: ULBI) will report its first quarter 2006 results for the period ended
April 1, 2006 before the market opens on Thursday, May 4, 2006. Ultralife
management will host an investor conference call at 10:00 AM ET also on May 4,
2006. 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 high-energy power systems 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 portfolio of standard products and engineered solutions, Ultralife
is at the forefront of providing 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, Germany
and Australia, among others.
     Ultralife's headquarters, principal manufacturing and research facilities
are in Newark, New York, near Rochester. Ultralife Batteries (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, 212-838-3777
             ctaitt@lhai.com