What is your iPhone battery health (and how old)?

I bought a second hand iphone 13 pro max 18 months ago. I got it cheap as the battery was at 84%. Today I checked and it's still at 84%! I generally charge it up and then don't recharge it until it's down to about 20-30% which can be a few days if I don't use it much. I have noticed that with intensive use the battery percentage goes down quickly and would likely last only a few hours.
 
15 Pro October 23 - 89% and 490 cycles. Possibly the worst iPhone I've ever had for battery, even more so than my favourite 13 mini. Probably not the case but that's definitely the perception, I think this specific one might be a lemon - I think the cycle count being more than the amount of days I've had the phone tells it's own story, I'm definitely not a heavy user of it.
 
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Since ios 18.3 my 13 pro battery has improved significantly. I'm ending the day with 30% battery compared to ~15% with earlier versions. Getting a whole day's charge is keeping me from upgrading, so I'll hang on to the 13 pro till at least september again now, and on the original battery! :eek:
 
Since ios 18.3 my 13 pro battery has improved significantly
I think it was 18.2.1 which sorted the battery on my 13 Pro Max. I'm back to ending the day on 40% whereas it had been close to draining it on the early iOS 18 versions.
 
iPhone 16 Pro Max bought at launch and still on 100%. Have utilised the optimised charging function form day 1.
 
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