Battery drain 20% overnight

[Rofixx91]

Hi, i have a big issue with my battery of S23 Ultra Korean version the last One Ui 6.1 October update. I noticed that overnight my battery drain about 20% i don't use facebook or any app that work on the background !! 

[lminvti]

Hi there 👋 , have you tried go to settings >battery > background usage limits and turn on put unused apps to sleep? Also check what app draining the most power and try clear that apps cache in settings, also in phone dialer you can type *#9900# then scroll down until you see batterystats reset press on that and see if any of this helps

[Rofixx91]

Thanks Bro i will try this solution and i will give you my feedback as soon as possibl

[lminvti]

Also if nothing works you can try wipe cache partition of the phone.

[BandOfBrothers]

Hello @Rofixx91 and may I extend a Warm Welcome to the Samsung Community Forum 👍 

Updayes can occasionally nit play nice with apps already downloaded. 

The Device Care Section under Battery can help to highlight app usage. 

There is also the optimisation tool in that section. 

Safe Mode  > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict. Alternatively long press the power off button and then long hold on Turn Off to get to Safe Mode. 

Samsung Support Links >

https://www.samsung.com/uk/support/galaxy-battery/optimisation  and https://www.samsung.com/uk/support/mobile-devices/how-to-optimise-the-battery-life-on-a-galaxy-smart... 

If i can be of any further help please don't hesitate to ask  😎