Battery stats require root starting with Android 4.4

Starting with Android 4.4, accessing battery stats is no longer permitted for normal apps. If your device is rooted however, the app will be able to access battery stats as usual.

If your device is not rooted, and you have a PC you can connect it to, there's still hope, here are the steps to get it working:

- Install ADB on your PC

- Install USB drivers if needed

- Connect your device to your PC through USB

- Run the following command in a terminal (if using 3C Toolbox Pro):

  adb shell pm grant ccc71.at android.permission.BATTERY_STATS

- For 3C Toolbox

  adb shell pm grant ccc71.at.free android.permission.BATTERY_STATS

- For 3C Battery Monitor Widget:

  adb shell pm grant ccc71.bmw android.permission.BATTERY_STATS