Let me give you few tips to help you;
1. See what's sucking the most juice. Navigate to Settings > Battery to see an
organized breakdown of what's consuming your phone's battery. Applications
and features will display in a descending list of battery hogs. If you see an
application you barely use or a feature you never use, you'll want to uninstall
the app or turn off the feature.
2. Reduce email, Twitter, and Facebook polling. Set your various messaging
apps to "manual" for the polling or refresh frequency, just as a test, and you'll
instantly extend your device's battery life by a significant amount. Once you see
what a difference that makes, try re-enabling just the most important ones, and
possibly reducing their polling frequency in the process.
3. Turn unnecessary hardware radios off. It's great that today's phones have
LTE, NFC, GPS, Wi-Fi, and Bluetooth, but do you really need all five activated 24
hours per day? Android keeps location-based apps resident in the background,
and the constant drain on your battery will become noticeable, fast. If your
phone has a power control widget, you can use it to quickly turn on/off GPS
(the largest power drain), NFC, Wi-Fi, Bluetooth, and LTE. On stock Android,
swipe down to bring up the Notification bar, and then tap the icon on the top
right corner.
4. Trim apps running in the background. From Settings > Apps, swipe to the
left; you'll see a list of apps that are currently running. Tap on each one to see
what they're for; you can stop any apps that you don't need running in the
background all of the time.
5. Dump unnecessary home screen widgets and live wallpaper. Just because
they're sitting on the home screen, seemingly inactive, doesn't mean they're not
consuming power. This goes for widgets that poll status updates in the
background, as well as ones that just sit there but look pretty and animated—
not to mention animated live wallpaper. (But don't dump everything, as part of
what makes Android great are the home screen customizations; just remove the
ones you don't use.)
6. Turn down the brightness and turn off Automatic Brightness. It's probably
obvious at this point, but you'll be surprised by how much this one alone helps
to improve battery life.
7. Update your apps. Applications often get updated to use less battery power,
so you should make sure your apps are up to date. Even if you configured the
phone for automatic updates, some apps still require that you manually install
updates. Check for app updates in Google Play by hitting the menu key and
going to My Apps.
8. Keep an eye on signal strength. If you're in an area with poor cellular
coverage, the phone will work harder to latch onto a strong-enough signal. This
has an adverse effect on battery life. There's not much you can do about this
one, but keep in mind that this could be the culprit behind a seemingly weak
battery; it's worth popping the phone into Airplane mode if you don't need data
or voice calls.
9.Try downloading trusted battery saver applications from Google play store, such as juice defender, battery Defender, Go Battery Saver & Power Widget, Tasker , etc
