I'm facing the same battery drain issue.
Used to get close to a day and a half worth of battery with my usage.
My usage has not changed, I can't even get though the day now.
I totally agree with you. When it comes to proving things, it is a bit difficult but for a regular user, it is not that difficult to see the differences.
The backup is reduced, with my regular usage it would last me for 2 days and be on say 17-18% not same happens within a day.
Same here! So frustrating. My battery used to least a lot and now drains so fast. And I haven't changed any settings.
my s21 ultra, drain so fast as twice as before even when idle. nothing is draining in battery health no apps is listed for 5hrs but it drains 30-40% idle power thats huge because before its juts 5-10% max drain when idle