Battery Health dropped by 2% after updating to 15.6?

[laszlo182]

iPhone 13 Pro, almost 9 months old. Had battery health at 99% just before the update, then after the update, the next day it changed to 98% and later to 97%.

I know there was recalibration of battery health included in 14.5 but I cannot find any info on that for 15.6.

 

[Ifti]

No difference here. Still on 100%
Also 9 months old. Update done a few days ago.

All I do is charge when its around 15-20%, and remove from charger around 80-90%. Otherwise I don't worry about it. In fact this has been the first time I've check battery health in months.

I wouldn't think too much into it. Ignore the battery health and just use the phone.

 

[laszlo182]

No difference here. Still on 100%
Also 9 months old. Update done a few days ago.

All I do is charge when its around 15-20%, and remove from charger around 80-90%. Otherwise I don't worry about it. In fact this has been the first time I've check battery health in months.

I wouldn't think too much into it. Ignore the battery health and just use the phone.

Yeah, I noticed this so precisely just because I was monitoring battery usage by app, because I sometimes get heavy drain from Find My iPhone as it is constantly on in the background even though nor I or anyone is actively using the service for my phone's location.

 

[Samdh90]

Unfortunately, that is perfectly normal. iOS does not always poll the latest stats each time the user checks it. iOS will usually poll the current battery stats either right after the update, or right after a clean install with iTunes or Finder.