How long did it take for optimised battery charging to activate?

[stanleydesu]

From what I've read it's taken up to a few weeks for the OS to learn one's charging routines and limit the battery to 80% whilst charging.
Am curious as to how long it took your M1 to start that behaviour, and what your charging patterns were like.

 

[Zazoh]

I noticed mine after 3 weeks of mixed usage where from like 7:30am to 3, I’d have plugged in, then in the evening I’d use for an hour or two off charger. One or two days I happen to use off charger all day.