Power Battery: Health Monitor

Is your charger actually fast charging? See the real speed in mA — instantly. Power Battery is a battery monitor that shows the data Android usually keeps out of sight: live charging speed in milliamps (mA), voltage, temperature, estimated battery health, and charge cycles. Real diagnostics, no gimmicks. ⚡ REAL-TIME CHARGING SPEED See exactly how many milliamps (mA) your charger delivers the moment you plug in. • Live mA reading while charging and discharging • Compare chargers and cables side by side • Spot slow or faulty cables • Check whether fast charging is actually kicking in 🔋 BATTERY HEALTH & CAPACITY Power Battery estimates your battery's capacity by measuring how it charges and discharges over time — the more you use it, the clearer the picture. • Estimated capacity (mAh) and health % • Wear level and capacity trend over time • Charge cycle tracking from the day you install • Helps you decide between a battery replacement and a new phone Note: capacity, health, and cycle figures are estimates based on measurements taken after install (and, on supported devices, system battery data). They're a useful guide, not lab-grade readings. 🌱 MAKE YOUR BATTERY LAST LONGER • Care insights based on heat exposure, time held at a high charge, and deep discharges • Personalized tips that turn your data into simple, lasting habits • Wear trend so you can watch how your battery is aging 🔔 SMART ALERTS • Charge limit alarm — get alerted at a level you choose (e.g. 80%) so you can unplug before 100% • Full charge, low battery, high temperature, and high voltage alerts 📊 ANALYTICS & HISTORY • Voltage, temperature, current flow, charge source, and time-to-full / time-to-empty • Charging speed classification: fast / moderate / slow • History and graphs across 1h, 6h, 24h, 7d, and 30d • Export your data (CSV / JSON) 🎧 CONNECTED DEVICES • See the battery level of paired Bluetooth earbuds, watches, and speakers • A dedicated connected-devices widget 📱 WIDGETS & THEMING • Home screen widgets in small, medium, and large sizes • Material You theming with dark and AMOLED modes ⭐ POWER BATTERY PRO The core app is free. A one-time Pro upgrade unlocks detailed graphs, the charge limit alarm, custom + AMOLED + Material You themes, unlimited history, CSV / JSON export, and priority support. 💡 GOOD TO KNOW • Charging roughly between 20–80% can help extend battery lifespan • Heat is one of the biggest causes of battery wear • Not every "fast charger" delivers its rated speed • Capacity naturally decreases as charge cycles add up 🔒 PRIVACY Your battery data stays on your device. Permissions, plainly: Bluetooth is used only to read the battery level of your connected devices; notifications power your charge alarm and battery alerts. That's it. Download Power Battery and see what your charger — and your battery — are really doing. Questions or feedback? Reach us any time through the developer email.