Wattz

Wattz is an Android battery monitoring application that displays real-time electrical measurements directly in the status bar. Users can select which battery metric appears in the persistent notification indicator. Its detailed dashboard reports power consumption in watts, electrical current in amps, and battery voltage. Additional measurements include energy capacity in watt-hours and amp-hours, temperature, and remaining charge percentage. Charging information shows whether the battery is charging, when charging began, and the estimated time until full charge. A configurable power scaling workaround helps address inaccurate readings on certain devices. Wattz operates without advertisements, data collection, or unnecessary permissions. It is available through F-Droid.