There are 3 Battery levels – Low battery, Reserve battery, and Critical battery. The Windows OS reserves a certain percentage of battery capacity. When it reaches that level, it prompts the end-user ...

Battery: A chemical device, normally composed of lead-acid, providing the initial power to crank the engine/ignition system. The battery also powers electrical devices such as headlamps etc.

Music playback time is the officially quoted longest time that a single battery charge will last when you use the phone as a music player only. Usually those numbers are only achievable when the phone ...