A full version program for Android, by 3c.

3C Battery Manager is a powerful, comprehensive, and easy-to-use battery management app for Android devices. This app is designed for users who have to deal with the battery-related issues of their mobile phones or tablets on a daily basis.

It will help you with the following tasks:

Monitor your battery and its status. Get detailed information on the type of battery you have, its current state, and how much longer it will last. The app will also let you know how much power you have left for your phone or tablet, and how much power it has left. You can also calibrate it with this app.