80% Charge Limit no longer working

I have an iPhone 15 Pro running 17.0.2 and have set my battery charge limit to 80%.


For the first few days, it worked perfectly. Then, it started charging to 100%.


I understand from Apple’s support site that this can happen for calibration purposes. But it’s now been 5 days and the battery is ALWAYS charging to 100% whether I use a cable, an official MagSafe charger or a third-party wireless charger.


The behaviour started under iOS 17.0 but is the same under 17.0.2


How can I solve this.

iPhone 15 Pro, iOS 17

Posted on Oct 2, 2023 1:14 AM

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Posted on Dec 3, 2023 3:54 AM

I updated iOS to v17.1.2 and this feature stopped working. However it had worked before updating.

10 replies

Nov 14, 2023 12:43 AM in response to mruprai

I don’t think this has been resolved. I got it working again by switching it to ‘optimised battery charging’ for a day or so, then switching it back. But that solution only lasted a few days I’m back to it not working again, at all.


It does say in the documentation that the phone does need to charge all the way to 100% occasionally. However, for me, it’s more the other way round. It charges to 80% for the first week or so, then it just stops working altogether.

80% Charge Limit no longer working

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