Energizer Ultimate Lithium AA Batteries. The world's longest lasting AA and AAA batteries in high-tech devices. Provides long-lasting power for digital cameras, high-power torches, and other modern high-performance electronics. Lithium batteries are a great high-performance replacement for standard alkaline batteries. Nominal voltage: 1.5 V. Units per pack: 4 Batteries. Size: AA. Type / Chemical: lithium. Common Uses: Digital cameras, CD/MP3 players, hand-held games, toys and games, Games controllers (Xbox 360, PS3 and Nintendo Wii).