How to reduce the battery consumption of "Android System"?

Question

Android

Comrades, I ran into a problem that, unfortunately, I expected .. My huawei honor 6 began to cruelly eat up the charge, which is barely enough for a day, despite the fact that there is 3mAh. Of course, wi-fi is always on on it, 2 hours a day in music mode from VK, 30 minutes of games. The rest is a rare surfing, responses to various notifications. Previously, in this mode, it was enough for 2 days. I recently updated the graphical shell to EMUI 3.0, but after that I did not notice any battery gluttony. Patience burst when about 15% of the charge was consumed overnight. In screenshots from the battery interface:

What is there in this process, I can not understand yet. Any tips for eliminating energy starvation?

Answer 1

I downloaded the program, but the result is disappointing ...