19 June 2017: seems to be working fine again now. Hanging since the last update. Battery history not working (OnePlus 2)
Been using it for almost 2 years now and it's a really good app. No issues whatsoever. Highly recommended!
Needs to restart itself after an update.
Samsung galaxy S8+
I really enjoy using the app, especially the sleep/night mode. It gives one so much more battery time. It's survived 3 mobile cell phone telephones & 4 iterations of Android (Jellybean through Nougat).
Informative and Essential A must for every Android device owner, this app provides comprehensive information about the battery; it completes the Android OS. The screen saver display is perfect: big and fat and glowing. Knowing the charging rate helped me diagnose a battery problem. Moreover, the developer is known to be hard working and sincere.
Improved rendering of battery history chart