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Interesting to see it occasionally bounce a few points back up – is it spending time in very different temperature regimes?
No (I assume that question was directed to me). And what I try to convey to people is that the battery will outlast the device. The device is on iOS 12. iOS 12 is pretty incompatible by now. I have two more iPads that are newer, wnd on newer iOS versions. Battery health and battery life are now irrelevant, as the iPad is practically unused by now.

Which is why worrying is pointless. Use it. For whatever you like and however you want. It is HIGHLY likely that the battery will outlast the iPad’s usefulness. When it is fully updated its quality is degraded too much by updates anyway.

You might wonder, why do you keep track of it then? Because I’m interested in the numbers for all of my devices. It’s curiosity. But I don’t care.

Due to irrelevant circumstances, I bought my iPad Air 5 (that still runs iPadOS 15) in September 2022, but I’ve barely used it since. OP has 99% health after 71 cycles? I have 96% and 54 cycles. And I don’t care. That is probwbly the worst ratio I’ve ever seen. It’s probably that low due to too little usage, as time degrades batteries too. And I don’t care. iPadOS 15 will be infinitely useless by the time the battery degrades. And since I won’t update it, low battery health won’t matter anyway. It’s pointless to worry.
 
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Do you guys have optimized charging on? A lot of the screenshots seems to have it off.
My iPad Air 5 doesn’t have an 80% limit, but my iPhone 16 Plus and 11th-gen iPad do. They’re all disabled.

I’ll never limit my battery. Like I said, for my usage and iOS update patterns I consider battery health irrelevant and I’ll act in accordance…

…but I respect those who enable it to preserve battery health.

I do have optimised charging enabled on my 16 Plus. For overnight charging, it does no harm. It stops charging at 80%. I typically unplug it around 6am. The device typically finishes charging by 3:30-4am. It isn’t accurate, but it does no harm, it just pauses charging for a few hours. I do wish it were a little more accurate. Not once have I unplugged my iPhone at 4am, yet it consistently finishes at that time.
 
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