Charge Meter: Is Your Phone Charging Efficiently?
This is a very simple app which allows you to identify the efficiency of your charging process on your phone. You can use it to identify the best charger and cable for your phone, check how fast your device is charging with different apps and know how long it takes to charge your phone and when it’s finished. With this app, you can measure the real capacity of your battery and also its temperature. 
The premium version gives alerts on when to charge and when to turn off charging and allows you picture-in-picture mode, home screen widgets and eliminates ads.
If you care for your battery health and wish to take care of it, Charge Meter is what you need!
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