Power saving mode is a Samsung feature which controls CPU and screen power as well as “haptic feedback” which uses vibrations to signal that a specific function has been utilized.
You can turn it on and configure it by swiping down from your home screen and then choosing the “Settings” icon (which resembles a gear):
You will see the list of your available settings: Scroll down the list until you see “Power saving mode” and set it to “On”:
Tap “Power saving mode” to review and configure the options. I recommend checking all three options to get the most out of power saving mode but you can pick and choose according to your preferences.
2.Deactivate Wi-Fi when not needed
If your phone's constantly sniffing out and trying to connect to every Wi-Fi signal in the area like a robot dog on heat, you're wasting power. Switch off Wi-Fi when out and about or when you know you're not going to be needing it. A Home screen toggle will make this easy. Think of it as something boring but essential you have to do, like always putting your seat belt on.
3.Uninstall unnecessary apps
You can never be too sure what's running itself in the background, what with all the multi-tasking, self-uploading, auto-replicating features in today's modern Android apps, so at least minimize the chances of something randomly hoovering up all your battery by constantly trying to connect to some non-existent server, by deleting any unused or old apps.
4. Reduce your multimedia use
Music and videos are the best ways I know to drain a battery. It’s cool that smartphones can do this stuff but I find myself very conservative with my multimedia use. I use a Blackberry as an MP3 player when I go to the gym, for instance, since it works fine for my purposes and I don’t have to run down the battery on my Android. Consider a cheap music player to carry on the side if you just need something to listen to.
If you’re on a coast-to-coast flight and don’t care whether you run your battery down watching a movie on your device, far be it from me to stop you, but if you need your device to communicate with the outside world (such as on a camping trip) I’d skip the entertainment.
Apps like Battery Doctor will give you a much better indication of what's literally eating away at your phone's battery over time than Android's own limited battery life checker, which could help finger something that's the key culprit in draining power. And if you can live without it, bin it.
Another Good app is Cleanmaster that i would recommend. Cleanmaster helps you keep track of what’s running on your device and can kill off processes taking too many resources.
This allows you to end programs directly. The program allows you to perform several functions; Select “Junk Files” > Selecting “Clean Junk” can restore some of your memory, making your Android have to work less.
The “memory boost” function is somewhat similar; it can kill open apps you don’t need. There is an App Manager which works in a similar fashion to the native manager on the Android, but you can backup apps first which can be handy:
Download These Apps which i recommend you to.
6.Turn off auto-syncing for Google accounts:
If you don't need every single Google account updated every fifteen minutes, just go into your Settings and Google account and turn off auto-sync for those apps you don't need constantly updated.
Steps to Disable the Auto sync mode:
Go to the Home screen page and then select the Application section .
Then move to the Accounts and sync option .
Now press to it and find the auto sync option.
Under it you have to turn OFF this option.
And you see that your auto sync option is on OFF mode.
7.Turn Down the Brightness of your Screen
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. This will also help your Eyes and your android battery life too.
These were the 7 Tips i wanted to share so that it helps you to extent your Android Battery life. I hope this helps.