iPhone 18 charged to 100% despite 80% optimized charging limit

my iphone 18 has optimised charging turned on and i set max charging limit to 80% so why was it charged to 100% this morning?

iPhone 18 Pro, iOS 27

Posted on Sep 22, 2026 11:30 PM

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Question marked as Top-ranking reply

Posted on Sep 22, 2026 11:32 PM

If you have Charge Limit set to less than 100 per cent, your iPhone will occasionally charge to 100 per cent to maintain accurate battery state-of-charge estimates.


About Charge Limit and Optimised Battery Charging on iPhone - Apple Support (IN)


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iPhone 18 charged to 100% despite 80% optimized charging limit

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