That's interesting.My 15 Pro Max is on 98% after 9 months and 151 cycles and it’s spent most of its life on 80% charge limit.
My wife’s is still at 100% and she’s got something like 180 charge cycles and it’s never had the 80% limit enabled either. Don’t think I’ll be bothering with it anymore.
Finally down to 99% after 186 cycles iPhone 15 Pro Max.
Just checked the wife’s 15 pro Max bought December. 130 cycles and 98%. Poor show that