Battery Tracker Pro

Battery Indicator shows your battery charge level (percent) as an icon in your status bar, with temperature, health, voltage, and time since plugged / unplugged in the notification area.

Features
1) Displays battery information in per cent (%)
2) Offers quality support for Android devices - from Android 1.5 to Android 4.0
3) Full support for all known screen resolutions
4) Power source indicator

Additional battery information:
- Temperature
- Voltage
- Health status
- Technology