Energizer lithium camera battery energizer 638011 the energizer 638011 is a cr2 lithium camera battery that has been developed to provide optimum long lasting performance for your film and digital cameras this battery is so dependable that you can count on it shot after shot this lithium battery also delivers long lasting power to keep up with todays high tech flashlights flash units and night vision goggles energizer 638011 camera battery cr2 lithium 800 mah 3v x1