Power Battery
See what your phone keeps hidden — true battery health, real capacity, live charging speed in watts, charge cycles and wear — plus Volt, an AI advisor that explains your data in plain language. Honest monitoring, no fake “boosting,” no killing apps.
▶ Get it on Google Play
What Power Battery shows you
A battery health app for Android that surfaces the numbers your phone keeps hidden — and explains what they mean.
- Real battery healthMeasured capacity (mAh) vs. design, over charge cycles — not a guess.
- Charging in wattsLive current & power, a charger speed test, and a charge-limit alarm.
- Care & wearA 0–100 care score and an honest estimate of days until replacement.
- Ask Volt (beta)Plain-language AI advice built from your own battery data.
Battery health questions, answered
New to this? Read the complete guide to checking battery health on Android.
How do I check my battery health on Android?
Android has no built-in battery health screen. Power Battery reads your phone's real measured capacity in mAh and compares it to the original design capacity, so you can see how much your battery has worn over its charge cycles.
How can I see my charging speed in watts?
Power Battery shows live charging current and power in watts while your phone charges, plus a charger speed test so you can compare cables and adapters and find your fastest charger.
How many charge cycles does my battery have?
Power Battery tracks your charge cycles over time and estimates wear, giving you a 0–100 care score and an honest estimate of how long until a battery replacement is worth considering.
Is Power Battery free?
Yes — Power Battery is free to download on Google Play. It focuses on honest battery monitoring: no fake “boosting,” no killing your apps.