Battery draining too fast after 6.1 update

[Vashkar_B]

My 8 months old S23 Ultra seems like loosing all it's battery strength. 

It was easy to check total SOT time on one full charge during One UI 5. Once I moved to 6/6.1, it's totally a nuisance. Specially after moving to 6.1. I charged my device 100% around 5 hours ago. Never play games or anything that put pressure on CPU. But now, it's 54%. Seems like each time I unlock my device 3-5% charge just vanishes in the air. 

How can I stop draining my device battery so fast? The SOT graph is not understandable to me at all. These days, I need to charge my device twice in 24 hours of time. 

Any special tip to understand SOT better? Is these anyway to check total SOT based on one full charge? 

Please suggest some ideas. It's completely ridiculous if I need to carry a power-bank for a 8 months old premium device like s23 ultra. 

[Tourbillon De La Vie]

Get/update to latest device care apk and you'll be able to change to view since last charge 

[Vashkar_B]

Thank you.
Is it a default apk?

[Tourbillon De La Vie]

https://eu.community.samsung.com/t5/galaxy-s24-series/device-care-app-update/m-p/9548753

[Vashkar_B]

Thank you so much. I have the latest version. And most importantly now I can check SOT since last charge.

[AlexxTG]

Same here, battery started draining like 2x quicker after last update to 6.1 UI.

Samsung, wtf?

I will not switch to S24 cause of this. I'll rather change the brand, cause that just ridiculous. That phone was a dream with long battery life and performance untill recent days. It also stopped working 100% fluently as well!

[JAbid]

It is really nuisance. The problem started after one UI 6 update. My S23 ultra lasted easily for One and half days on heavy usage. Now after the update, barely lasts a day. Probably my last samsung flagship. Time to shift to apple. 

[Vashkar_B]

My wife's using 15 pro max and her phone battery seems like last forever. Thats a real shame Samsung! I wish I could show my actual usage and the terrific level of battery drain.

[Vashkar_B]

My one never really lasted for a day! I am never ever a heavy user. And top of it, One UI update just made it super worse. 4-5 hours of SOT with not even average usage.

[sie555]

My s23 ultra 14 months old battery doesn't seem to last as it did a few months ago. Charging only goes to 80% now used to go to 85 % as I have battery protection on, rubbish !!!!!