希望对您有所帮助:

1. 它使用未经批准的调用，因此请勿使用此代码发布您的申请，否则您可能会被拒绝！

1. It uses non-approved calls, so don’t post your application with this code or you may be rejected!

http://blog.coriolis.ch/2009/02/14/reading-the-battery-level-programmatically/

来自苹果；所以不要担心这个代码:https://developer.apple.com/library/ios/samplecode/BatteryStatus/Introduction/Intro.html(附完整示例代码)

From Apple; so don't worry about this code: https://developer.apple.com/library/ios/samplecode/BatteryStatus/Introduction/Intro.html (With complete sample code)