I've always been cautious about charging between 30-80%, but it's a hassle honestly.
So when Apple implemented Optimised Charging, I thought I could go back to charging over night and still retain good battery health. But I've been charging my iPhone 11 over night more or less at the same times (1130PM-0730AM) for about a week now, and I can't see that Optimised Charging has activated yet (it is turned on). When I check the charging statistics in the Battery menu, I can see that the phone charges to 100% immediately every night when it is connected to the charger, and just stays on 100% all of the night while being plugged in.
So... How long is it supposed to take for this Optimised Charging to activate?!
I have the Bedtime feature configured according to the times I go to bed and wake up, and extra alarms set for each morning as well... You would think that Optimised Charging would pick that up over the course of a week of consistent charging times.