Battery cycle count in Settings > General

[Jumpie]

I was looking at Settings and found this in General under Battery.

 

[mdlyen]

This will only display on the iPhone 15 (for a reason only known to Apple).

 

[prefuse07]

same with "Charge to only 80%" -- iPhone 15 exclusive

 

[sack_peak]

This feature will induce upgrades on anyone with OCD relating to battery health. I am blessed that I am scheduled to get a 15 Pro Max.