Here are some handy tips to improve battery life of any Android phone-
Power saving through apps management:Apps running in background cause a major stream of power drain. Hence, it is better to make a practice of closing apps running in background once in a while. You can end all the apps running in background using "Task Manager" in your mobile phone. If you are too busy to manage apps on your own, then you can take help of some third party apps such as "App killer". There are also some apps available to manage the tasks for your phone to manage the optimal usage of the battery power. Tasker app and Autorun Manager app are among the most preferred apps for this purpose.
Saving battery by managing notifications:A continuous flow in of notifications from various apps cause a high amount of power drain. Hence, it would be better to keep the notifications off for lesser priority apps.
Also, using separate caller tunes and caller images can consume more battery, so it is better to avoid this.
Power saving through screen management:Managing screen to control power usage can be done by two ways. First, reduce the brightness of screen and keep the screen brightness management option to "Auto".
Secondly, set the "screen timeout" to minimum possible time to make sure that screen light turns off when the phone is not actively used. Ideally, screen timeout should be lesser than 30 seconds.
Saving battery by managing connectivity settings:In connectivity the main battery suckers are navigation services i.e. GPS. If you are using the "location" services then your battery power may drain fast. So, keep the navigation services off when not absolutely essential.
The connectivity options such as Wi-fi and Bluetooth also involve a high volume of battery consumption. So, it is better to keep wifi and Bluetooth off whenever not required. (This will also save you from virus and data theft vulnerability.)
Install power saving apps for Android phones:Some Android Apps help in saving battery life. For example: Juice Defender, Go Power Master Battery Saver, Battery Defender, etc.