Troubleshoot a battery that drains too fast

 

 

Step 1: See which apps use the most battery

Check all apps

1. Open your device's Settings app .
2. Tap Battery.
3. See a list of apps and services with the percentage of your battery used since your last full charge.
4. To get details and change options that could save battery, tap an app or service in the list.

Tip: You'll see Google Play services on the list. Google Play services gives you access to Google services. It’s integrated with Android. You can’t force stop or uninstall Google Play services.

Check usage alerts

1. Open your device's Settings app .
2. Tap Battery.
3. Tap More   Usage alerts.
4. See a list of apps that have recently run in odd ways that can use battery.
5. To get details, tap an app in the list.

Step 2: Force problem apps to stop

You don't need to close apps unless something goes wrong. Swiping apps closed doesn’t save battery.
But to completely turn off an app, including any background services that may be using battery, you can force stop the app. To force stop and restart is like a "hard reboot" for an app.
Important: If you force stop some essential apps or services, your device won't work correctly. Force stop isn’t available for all apps.
To force stop an app:

1. Open your device's Settings app .
2. Tap Apps.
3. Pick the app from the list.
4. Tap Force stop OK.

To start a stopped app, tap that app to open it as usual. Learn where to find your apps.

Step 3: Uninstall problem apps

If an app still uses too much battery after you’ve force stopped and restarted it, you may want to uninstall it.

1. Touch & hold the app that you want to uninstall. Learn where to find your apps.
2. Drag the app to the Uninstall icon at the top of the screen.
3. Release the app

SOURCE GOOGLE https://support.google.com/nexus/answer/6090599?hl=en