Watts
View on GitHub

See how fast your phone is charging.

Charging power, time to 80% and 100%, and battery temperature, on one screen.

Download for AndroidAndroid 7.0 or later
  • Free and open source
  • No ads
  • No account
  • No permissions
Watts while charging in light mode: 15.8 watts, 42 percent
Watts while charging in dark mode

What it shows

How many watts?

The power going into your battery, live.

Watts showing 15.8 watts and a battery bar with an 80 percent marker

When will it be ready?

Time to 80% and 100%, plus a forecast for every 10% in between.

Charge forecast from 50 to 100 percent with clock times, and the time to 80 and 100 percent

Is it getting hot?

Battery temperature, marked Normal, Warm or Hot.

Battery temperature of 33.4 degrees marked Normal, with current and voltage

How long will it last?

Unplugged, how long you have left at your current use.

Watts on battery showing about 11 hours 20 minutes left and a drain of 240 milliamps

Times are estimates. Charging slows after 80%, so 90% and 100% are the least certain.

Install

  1. Download the APK

    From the latest release, on your phone.

  2. Open it

    Allow installs if Android asks.

  3. Plug in

    Open Watts and connect a charger.

Plug in and see.

Download for Android