My battery health has degraded over the year or so I’ve had the 15 PM, but it’s in normal range (89% with 272 charge cycles) and the change was noticed pretty immediately after upgrading to iOS 18.

I have been noticing my battery life being lower after the 18 and 18.0.1 update on the 15PM. It feels like I’m ending my day with less than 20% battery when before I was over 30% easily.

It still gets me through the day, but not as comfortably.