Sounds like it’s a known issue. A factory reset helped one, but not another.
Someone suggested:
Go into settings > Device care > Performance profile and set the profile to light.
Is that setting on yours, it’s not found here, unfortunately, just auto-optimization under Performance.
On the tablet here there is a Battery section in Settings where there is:
Battery Protect (Limit Charge to 85%)
They explain it here, is there a reason why the limit can’t be 99% instead for the same effect?
Also in Batteries setting there is a Power saving switch, doesn’t promise to be much of an impact though. 🙁
