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It is highly likely that there is either a bug. Or Google made major changes to the Android Kernel related to Power Consumption. Which is why you are seeing the issue.
I'd further go to state that (since I'm old school) that it would be beneficial to backup your data and perform a factory reset on your device. Restore your device, and let the Alogorythm relearn your usage patterns. You should be patient.
This should resolve your battery issues. Thank you for using Samsung Member's App!
1. Turn off your Galaxy S23 completely.
2. Press and hold the Volume Up button and the Power button at the same time.
3. Keep holding until you see the Android recovery menu appear.
4. Use the Volume down button to highlight “Wipe cache partition”.
5. Press the Power button to select it.
6. You will see a confirmation message, select Yes to confirm.
Your S23 will reboot and the cache partition is now wiped.
Thank you for using the Samsung Member's App!
***Please NOTE: Pay attention to the selection you make on the screen. Picking the wrong one will and could delete all of your data***
This method will also work for other Samsung Devices experiencing the same issue. Use Caution!
Having the same issue. I tried wipping the cache but no luck. I go out fir a bike ride with 100% and phone goes good dead in 4 hours when phone says I have 16 plus hours available. So darn frustrating. Wasn't doing this before the latest update.