Anecdotally I have 98% capacity at 248 cycles on my 15 pro. I use an 80% charge limit as I don't use that much battery in a day.
[0] https://9to5mac.com/2024/02/20/iphone-15-battery-lifescyle-s...
It turns out the top few percent is what really damages the cells - which means there is always an inherent capacity vs cycle life tradeoff.
Anecdotally I have 98% capacity at 248 cycles on my 15 pro. I use an 80% charge limit as I don't use that much battery in a day.
[0] https://9to5mac.com/2024/02/20/iphone-15-battery-lifescyle-s...