There are many ways that you can improve overall battery performance on your Andriod device. Here are some things to check and do on your phone:
Uninstall any applications that are not being used.
Check the Google Play Store for any updates to existing applications.
Delete and re-add email accounts to refresh their settings.
Understand your email sync options.
Push – Will drain your battery every time/notify a new email arrives. This is best for you if you need to be notified when an email arrives and receive very little email in a day.
Interval (5min, 15min, 1hour, etc) – Will drain your battery/notify on the interval specified. This is best for those who need to be notified, but receive a large amount of email in a day. Choose the longest timeframe that works for you.
Manual – Will only drain your battery/notify when you force email to sync. This is best for those that don’t need to be notified when a new email arrives and/or need the best battery life.
Avoiding deep discharges of your battery is the key to maximizing its long term capacity. Charge often and whenever possible!
Use the auto-brightness feature and lower the brightness.
Utilize the power saving mode feature.
Turn off GPS and Sprint Hotspot if they are not being used.
Live wallpapers use significantly more battery than standard wallpapers when the screen is ON, choose another wallpaper which is not Live.
Enable Wi-Fi on your smartphone, and you can download data faster and use your battery longer. Plus, your smartphone will automatically search for available Wi-Fi networks in the area, which makes connecting to the Internet easier than ever.