Battery Health - Apple Watch vs iPhone

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alasta

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#302051 25-Oct-2022 12:27

My iPhone and Watch are both roughly 14 months old. The iPhone is showing 99% battery health and the watch is showing 90% battery health. Admittedly the Watch probably averages slightly more charge cycles than the iPhone, but not significantly so.

Is it normal for the Watch battery to degrade that much faster than the iPhone battery, or is this indicative of a battery defect? I am thinking it might be a good thing if the watch battery hits 80% health within the next ten months so that I can get it replaced under Applecare.

Handsomedan

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#2987677 25-Oct-2022 12:31

I have had Apple Watches for a few years and to be honest, the only one I really ever looked at re Battery Health was my S6, which I have just replaced with the Ultra.

When I handed that down to my son, it was at 92% Battery Health and had been charged daily and used extensively.

I'd say your Battery Health is sub-optimal. Just checked his S4, which also used to be mine and has not had a battery replacement - that's on 91%.

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RunningMan

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#2987808 25-Oct-2022 14:25

I think it's more that the iPhone health is extremely good. Never seen 99% for a phone over a year old before.

alasta

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#2988098 25-Oct-2022 20:38

Thanks guys. It sounds like the phone is performing better than expected and the watch is performing worse than expected. It makes me wonder if there are quite wide manufacturing tolerances on the batteries, or maybe the battery health measure just isn't particularly accurate.

Handsomedan

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#2988157 26-Oct-2022 08:52

alasta:

Thanks guys. It sounds like the phone is performing better than expected and the watch is performing worse than expected. It makes me wonder if there are quite wide manufacturing tolerances on the batteries, or maybe the battery health measure just isn't particularly accurate.

Knowing what Apple are like for their QC, I'd say it's more likely to be the latter. I would say there's some algorithm doing an estimate based on a number of metrics and it's just not that precise. Maybe.

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