Try clearing cache in recovery
Also I found this on the androidcentral forums check it:
1. Display Brightness - Turn off Auto Brightness and Reduce Setting Bar to Minimum acceptable to you.
2. Beware of constantly syncing Apps and Bloatware like Facebook, Twitter, News, Non-Push Email, etc. Set Sync interval for every 1 hour or more.
3. Don't use Live Wallpaper. Use dark wallpaper if possible.
4. Set Display Sleep Setting to 2 Minutes or Less.
5. Use WIFI over Cellular data when possible. Set WIFI to Always stay on during Sleep if you regularly use WIFI.
6. Be careful of using an excessive number of live widgets.
7. If you Sync Exchange Emails - set old email sync for 30 Days or less.
8. Do NOT use a Task Killer Battery Saver App.
9. Turn off Google Now and Location Reporting if you don't use it.
Check some of these ideas as well:
https://www.androidpit.com/how-to-save-battery-life