Charge to 100%, let it go down to 50%, then check the battery history to see what drained the power. If there is an app, uninstall it.
Lithium batteries don't like being fully discharged and that can kill a new battery.
Another trick is boot up in safe mode and see if you get the same kind of battery drain. If yes, then it's systemic or battery. If no, you have an app misbehaving. Try that and come back to tell us how you went. If no joy, we'll trouble shoot further...
If you have another battery, try that in your device...
03-04-2017 04:03 AM