WattMate: Battery Charge Power

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About this app

WattMate shows you exactly what's happening when your phone charges. See real charging power in Watts, live voltage, current, and temperature — all updating in real time.

⚡ CHARGING POWER
Know your actual charging wattage, not just a percentage bar.

- Live charging power display in Watts (W)
- Charging current in milliamps (mA)
- Battery voltage in volts (V)
- Find your fastest charger and USB cable combination
- See if your phone is fast charging or trickle charging

🌡 TEMPERATURE & BATTERY HEALTH
Keep your battery healthy and out of the danger zone.

- Real-time battery temperature monitoring
- Battery health status (Good / Fair / Poor)
- Charging state: AC, USB, Wireless, or unplugged
- Temperature alerts to protect against overheating

📊 LIVE GRAPHS
Watch your charging stats over time, not just a snapshot.

- Real-time power graph while charging
- Current and voltage trend over session
- Spot fluctuations caused by charger, cable, or background apps

🔍 WHAT AFFECTS YOUR CHARGE SPEED?
Your charging speed depends on many real-world factors:
- Charger type (AC adapter, USB-C, wireless)
- USB cable quality
- Phone model and chipset
- Apps running in the background
- Screen-on vs screen-off state
- Current battery level (charging slows near 100%)

WattMate reads directly from your device's battery controller for accurate, science-based readings — no guesswork, no false claims.

WHY WATTS MATTER
Most apps show you milliamps (mA). WattMate goes further: Power (W) = Voltage × Current. That means you see the true charging power, which is what actually determines how fast your battery fills up. A 5V/2A charger and a 9V/1.5A charger can both show ~2000mA but deliver very different charging speeds. WattMate shows you the difference.

CLEAN & SIMPLE
No bloated features. No fake battery "cleaners" or "optimizers". WattMate does one thing: give you accurate, real-time charging and battery data that you can actually trust and act on.

Works on Android phones and tablets. Results depend on hardware support — most modern Android devices are fully supported.