Samsung s22 ultra battery problem after one ui7 and android 15

[Members_qUPVgk7]

After updating my phone to android 15  and one ui7 my phone charges slower and the battery drains a lot quicker . for example when i plug my  original power brick 25w at first it says  fast charging 1h12minutes then it changes to charging 1h 34minutes. I noticed my battery drains quicker after sleeping . Before the update it would drain around 10 % now is like around 20% or more . And its not just at night when i dont use it , when i use it  ,it feels like it drains  1.5 times quicker than before .I hope it is a problem from my  app or something that would be a quick and easy fix.

[Tourbillon De La Vie]

Try with wiping phone partition cache 

• Power off the device.
• a USB-C cable to a PC or another device.
• Hold Volume Up + Side Button until Recovery Menu appears.
• Select Wipe cache partition/ Confirm Reboot system.

Hopefully it will get better after everything settles. But, battery and phone are getting on a bit 

[Reylob]

Hi @Members_qUPVgk7 

The super fast charging is enable until the phone reaches 80% (I am not sure of the exact percentage), then it goes slower for the remaining percentage of the battery. I think that this is a trend on battery charging including electric cars.

The battery performance seems to be worse after a big update but it should settle down soon after. It is similar to when the phone is new, the battery performance seems horrendous until it settles and then it is very good.

My advise is to keep all your settings as they are, wait a week or two and you should see improvement on battery performance.

[JAMES4578]

Hi @Members_qUPVgk7 Welcome to the Samsung Community 😃 

The Battery relearning phase takes up to 14 days so there will be an impact in the initial stages,you also need to factor in that there will some Battery degrogation at this point.

Another idea is to reset the  Battery stats. Go to security and Privacy  turn Auto Blocker off. In the Samsung phone app Dial *#9900#,scroll down to Battery stats Reset,tap and Restart Device.  Whilst I have known this credit to @lminvti  @Moiramon and @Piper123 who have mentioned this fairly recently.