How to find a battery eater on an Android phone?

Question

Batteries

I have a Motorola Moto X. With moderate use, the phone held the battery for about two days and even a little more. At the same time, however, wifi, mobile Internet, bluetooth and synchronization were automatically turned off at night.
At some point, quite dramatically, the battery life was reduced to about 20 hours. At the same time, absolutely nothing has changed, the use is about the same, the same software, the same rhythm, in general, everything is the same as before. Just in case, I deleted the programs that I installed last, you never know, but nothing has changed. Somehow I ran an antivirus, to no avail, nothing was found.
Judging by the statistics, the main consumer of wifi.
How to find the reason for such a sharp drop? I understand that 20 hours is also not bad, but it was two days and 20 hours became literally in one day

Answer 1

Statistics in the studio. And so the battery monitor will show the consumer to the app if it uses WiFi
PS.
Have you changed your router at home?

Answer 2

On w3bsit3-dns.com it has already been painted a hundred times for each phone. General plan of action:
1. Post screenshots Settings - Battery (Attach screenshots here, we'll try to figure it out together). Also a detailed schedule from there too.
2. Install Wakelock Detector and find out which system process is bugging (Put screenshots too
) assembly", then go back to the settings and find this item. Or google how to do it
) launch, and screen it).
5. Go to settings - about phone - build number - press 8 times. Then settings - for developers - show CPU usage. And there to see what is in the first places, and whether it is permanent.

Answer 3

install SystemPanel and leave overnight