CR1225 Lithium button cells are commonly used in car security (car alarm/keyfob batteries), organizer (backup battery for PDA such as Psion etc), glucometer, camera, electric thermometer, calculator, computer equipment. High energy, high reliability 3 volt power source. Excellent memory backup power source. Low self discharge rate gives this cell a 10 year shelf life. Stable voltage broad temperature range (-40°C to +125°C).