My iPhone's battery health was at a 100% before iOS 18 update, now it’s at 92%

my battery health was at a 100% before ios18, now it’s at 92% !! did this happen to anyone else, what can i do about it?!


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iPhone 15 Pro Max, iOS 18

Posted on Sep 25, 2024 11:03 PM

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Question marked as Top-ranking reply

Posted on Sep 26, 2024 12:18 PM

How long have you owned your iPhone and/or how many cycles does it show in Battery Health? iOS updates don't make batteries lose health. But they can reevaluate the true health of the battery.


On average, you can expect to see a 1% drop in battery health per month of ownership. Or for every 25 cycles you can expect a 1% (on average) loss in Battery Health.


If you've owned your iPhone for at least 8 months or your phone has had 200 cycles, then your battery health is about where it's supposed to be.


There is one constant with battery health and that is it WILL go down. When it reaches 80%, it will then be time to pay Apple to replace the battery.

2 replies
Question marked as Top-ranking reply

Sep 26, 2024 12:18 PM in response to jimenadhs

How long have you owned your iPhone and/or how many cycles does it show in Battery Health? iOS updates don't make batteries lose health. But they can reevaluate the true health of the battery.


On average, you can expect to see a 1% drop in battery health per month of ownership. Or for every 25 cycles you can expect a 1% (on average) loss in Battery Health.


If you've owned your iPhone for at least 8 months or your phone has had 200 cycles, then your battery health is about where it's supposed to be.


There is one constant with battery health and that is it WILL go down. When it reaches 80%, it will then be time to pay Apple to replace the battery.

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My iPhone's battery health was at a 100% before iOS 18 update, now it’s at 92%

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