I am using a Samsung-SGH-i847 Android version 2.3.6, but I feel that my usage is not being supported with my existing battery. I would like to know whether there is any app for extra battery life which saves battery on my usage. I checked online for it and found Green Power, Battery Doctor, DU, etc. Kindly suggest me a better app for my battery life?
Hi Justin. I see that your android version is very low. For that kind of situation, from my point of view you should use DU. I used it myself and its great,
it can make your battery last 25% more with cool Optimizer. Let me give you a picture how it looks.Â
1. Its interface is pretty easy to use.Â
2. It uses less ram from the device.
3. It can optimize the device to use less power for an extra 25 %.Trust me DU is the best.
The battery remains always problematic for the smartphones. So people always search for the application which can increase their battery timing. As you asked which is best battery saving app then you need to install the One Touch battery Saver application. You can find this at play store. And it is Android 2.3 supported. It contains the 3 different battery models to choose, so you can choose the best for you. I am also going to give the picture of that application 
