Why is my Android OS and Android system draining my mobile battery?

[AC Question]

Android OS and Android system draining mobile battery

I use moto g 2gen. Dual sim. My usage is minimal but signal strength is not that great in the area I use. My mobile battery drains from 100 to 10 within 8 hrs. Android OS usage is huge nearly 60 %. Please let me know any solution. I use OS 5.0.2

 

[Cushastri]

Re: Android OS and Android system draining mobile battery

I posted the above question before logging in.
Adding few more details on the screen grabs



Please let me know the solution