Finding that you're just not getting the battery life you need from your Android smartphone or tablet? You need to take a look at Greenify.
Greenify is a free app for Android (Google Play Store link) that helps you to identify power consuming apps and place them into hibernation when you are not using them. Not only does this stop them from eating at your battery, but it also prevents them from slowing down your device.
There's no need to root your Android device in order to use Greenify, but if your device does happen to be rooted then the app gets the ability to do even more.
Android 6.0 Marshmallow users can benefit from even more battery savings by activating a feature called Aggressive Doze Mode with takes the built-in Doze Mode features and, well, amps it up in order to make it even more effective.
I've tested this app on a few devices and find that it does what is says on the tin. Battery life is increased with no downside. This is far better than digging through a whole raft of settings in order to get back a few extra minutes of battery life.
The app is free so just go ahead and install it and see how it works for you.
For more information on Greenify, head over to the very active, and highly informative, forum over on XDA Developers.
Want to read up more on Android Doze helps to save power? Go check out the excellent piece over on How-To Geek for more information.