A free program for Android, by Titanium app.

When charging your smartphone, do you want to know how much current you are receiving and how much power you are using?

You can find all this information in one place with Charge Meter. It is a free utility developed by the developers of the app. 

The app works as a notification. You can receive a notification when the device is connected to the charger and when the charger is disconnected.

This is the best way to keep track of the charging process.

The application uses the device’s power measurement unit to determine the amount of energy used and received.