Quick Battery is described as 'Nice 1x1 battery widget. It doesn't drain battery as it stops working when phone's screen is off (proven to work optimally on Android 2.2). Combine it with Quick Settings (to get access to system settings) or with another app' and is an app. There are three alternatives to Quick Battery for iPhone, iPad, Apple Watch, Mac and Android. The best Quick Battery alternative is Battery Widget. Other great apps like Quick Battery are Battery Master and Sleepy Battery.
Track batteries of iPhone, iPad, Apple Watch and Mac on every device. Battery levels sync over internet. Low-battery notifications. Share battery with friends and family.
Need to know how long you can watch your movie on your iPod? Wanna estimate how long you can talk over your mobile network? Or some times you need to make sure the battery left is enough for finish the game play for the next level...
China
Turn off interfaces draining your battery life; it detects when your phone is idle and then it can power off:
