battery drain over night arround 8-12%

[AC Question]

My location is off even i make low battery mode on at night bt my phone always connected to wifi over night and ya my syncing of maill n all is on. M using 1+3 mobile. I lost 6-12% battery not fixed percentage what is solution of it plz need it so badlyyy....
And ya after using 100 perecnet to 0 percent of battery at last Android system and android os use 9% and 6 % of my total battery is it normal??
Please make any solution guys.

 

[belodion]

Charge to 100%, then post a screenshot of your battery usage stats in the morning. Post also another screenshot made when the battery is down to about 40%.

Routinely discharging the battery to an indicated 0% is generally considered to be bad practice. See this:
[Guide] The Care and Feeding of Lithium Polymer Batteries

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