How do I get my iPhone to recalculate battery health?

Weldawadyathink
Thu, 13 Feb 2025 09:47:02 +0000

My iPhone 14 Pro has been at 84% battery health for almost a year now. Anecdotally the battery lasts significantly less time than it did previously, even when it was already at 84% health. I think it may just be a stale calculation, and my actual battery health is significantly lower. If I can get it to show as less than 80%, I can get AppleCare to replace it. Does anyone here know how to get the iPhone to recalculate this value?

I have Coconut batter on the Mac, and it can check the battery health for an iPhone attached with a cable. It uses a different formula, so it gives me a health of 87%. However it also shows history for when I have run it in the past, and when I tested it almost 100 charge cycles ago, it also read 87%. I don't know how any battery can go almost 100 charge cycles with zero degradation (537 to 617 cycles, so it's not like it's a fresh battery).

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