i've been regularly checking my battery health percentage after i updated to iOS 17. after i updated, my battery health just kept declining week after week, add that to heavy usage and leaving it on the charger overnight, does iOS 17 have any part in my declining battery health? i turned off battery percentage and true tone if that helps my battery from draining faster
iPhone 13
That's normal, considering that that value is approximate and, most of all, that is related to when the battery (not the iPhone) was new. See this support article too:--> iPhone Battery and Performance - Apple Support
Regards
Giulio
Nothing unusual here. On average, the battery health will decline an average of about 1% a month. That's an average. Some months, it might not decline at all, then drop 2% the next month.
When the Battery Health is down to 80%, it is time to replace the battery.
My iPhone 13's Battery Health dropped to 95% after four months
