AA Battery:Capacity: 2600mWh Voltage:1.5v Charging method:5V Charger Life:1200 times Battery temperature: -20℃~ -60℃ Battery type: lithium batteryAAA Battery:Capacity: 750mWh Voltage:1.5v Charging method:5V Charger Life:1200 times Battery temperature: -20℃~ -60℃ Battery type: lithium battery About the indicator light: flashes when charging, and stays on after full charging. Used for:keyless-entry devices , garage door openers, car remote control,key fob, wireless doorbells, ceiling fans, GPS tracker,home alarm system, security device, igniter,LED flashlight, toy, clock, razor, electronic dictionar