A couple of days ago, my Screen On Time (SOT) suddenly dropped from 6-7 hours to less than 3 hours without any apparent reason. There wasn’t an update or any other indication of a software problem. In the battery usage stats, I don’t see any particular app causing the drain; every app uses a fair amount of battery. For example I am almoste at 50% and SOT is just something more then 1 hour.
I tried using a 45W charger for two days and noticed that the battery drain became much faster after that, so I switched back to my old Pixel charger, but the battery drain still persists. It might just be a coincidence that the issue started when I switched chargers. Has anyone else experienced the same issues?