Problem with duration - android-OS takes too much energy
since about one week I have the problem that my battery loses a lot of energy even if I don't use the phone. The problem is that the android services (android-os, media server, standby) take too much energy!
I thought that it could be because of the app viber which I also installed one weekago, but I deleted it and the problem is still there. I attached a screenshot so you can see how many per cent android takes itself. I hope you don't have a problem with the German, the symbols and my description help you hopefully with understanding it.
I hope some of you can help me with solving this problem because my battery just lasts about 12 hours when I'm doing nothing! I don't really want to make a factory reset because I personalized it very much already.
My ROM is Moto JB 4.1.2 with a heavy touch of AOSP.
I hope somebody knows a solution.
Thank you very much.