Issue: The battery usage time for "Android System" is over-reported by a factor of five.

To replicate:

  1. Charge phone to 100%.
  2. Take note of the time the charger is disconnected.
  3. Use the phone normally for a day or so.
  4. Go to Settings > Battery > Battery Usage.
  5. View the battery usage for "Android System" and compare the stated usage to the duration since the charger was disconnected.