Coin Cell Battery CR3032 is one of the largest and highest capacity lithium buttons. CR3032 lithium button cells are commonly used in car security (car alarm/keyfob batteries), organizer (backup battery for PDA such as Psion etc), and glucometer equipment. CR3032 lithium button cells are also often found in camera, electric thermometer, calculator, computer equipment (memory backup battery, and motherboard clock backup for examples), toys, accutron, communication equipment, PDA mem-backup, toll pass, medical devices, electronic watches/clocks, card radios, and data packs for video cameras. Specifications Output Voltage: 3V Amperage: 500mAh Chemistry: Lithium Battery Size: CR3032 Height: 3.2mm Diameter: 30mm