Anecdotally speaking, the 80% limit seems to be key to better battery aging long term.Anecdotally speaking, the 80% limit seems to be key to better battery aging long-term.

My launch-day iPhone 15 Pro Max is at 95% battery health. That phone has had the 80% limit enabled since day one, and I very rarely have had to increase it for specific busy days.

My previous iPhone 12 Pro Max very quickly descended to 88% battery health after a year.

My charging habits remain the same: fast and furious Magsafe/Qi/Qi2 charging every time there is a charger nearby (remote worker, so that’s almost all the time).

I do have unpleasant thoughts about the 80% battery charge limit not being available on anything older than the 15, since it turns out it can be sideloaded via Nugget and MobileGestalt manipulation.

Not enough to push me away from the walled garden (these phones are aging better than my previous flagships from other ecosystems), but a reminder of the rough edges in it.