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iPhone 15 Pro Max iPhone 15 owners, what is your cycle count and battery health?

doogm said:
Now one year since purchase. 97% max capacity, 244 charging cycles.

For the first 5 months I charged with typical USB-C Power Delivery chargers to a 80% charge limit, but after realizing that almost all of my charging was overnight while I slept, and while I showered after workouts, I switched to 12 watt USB-A to USB-C charging to an 85% charge limit, hoping that will extend battery health - I intend to keep the phone for 2.5 years, so another 18 months.

My guess is that battery health has more to do with total charge cycles than how you charge, but I'll still keep on this way while I own the phone.
Click to expand...
Yeah, I agree that BH has more to do with cycles (and heat!) rather than how you charge.

An example: for 5.5 years, my main iPhone was an iPhone Xʀ running iOS 12. It has been on higher percentages for the vast majority of its life, as I haven’t used it much and I like to keep track of battery life. I can’t do that when standby makes it drop, so whenever I saw that the battery percentage dropped too much on standby (and it did, its standby battery life is terrible on iOS 12. Not a bug or a stuck process, but a pretty consistent maybe 7-10% every 24 hours of standby. Since I didn’t use it much because I had an odd use case with it, it was on standby a lot. So I charged it when it dropped… a lot!

I charged it with a 5w charger exclusively (always to 100%), avoided heat, and never updated iOS. That’s all I did. After 5.5 years of being between 80-100 a LOT it has around 360 cycles with 89% health. Pretty good considering I pretty much did the opposite of what’s recommended.

I do think that battery health is irrelevant if the device is on its original iOS version (i.e., battery life will be just as good if you don’t update with 70% health than with 100%… I’ve tried), so I don’t worry.

But after that experiment? Now I care even less about charging limits. Always to 100%, I know it’ll be fine.

I’ve tested iPhones on good iOS versions with 1500-2200 cycles and they were fine, so I do think this is not an issue at all.

However, since I’m a light user I doubt I’ll see an iPhone with many cycles that I have used myself. The best I’ve used was an iPhone 6s with 60% health and 1400 cycles which still runs iOS 10. Battery life was like-new.

My current iPhone 16 Plus is new, and it’ll take years before I see a decent number of cycles. I think this might be interesting with about 800-1000 or more. Less than that and it doesn’t say much.
 
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Obi Wan Kenobi said:
iPhone 15

First use September 2023.

Max capacity 99%.
Cycle count 288.

I use a MagSafe charger, but I don't do overnight charges.

Charging is optimised.
Click to expand...
That was 24th July 2024 ⬆️.

Update 27th March 2025:

Max capacity 95%
Cycle count 522

Looks like the first 288 cycles were less demanding than the next 234...
 
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Obi Wan Kenobi said:
That was 24th July 2024 ⬆️.

Update 27th March 2025:

Max capacity 95%
Cycle count 522

Looks like the first 288 cycles were less demanding than the next 234...
Click to expand...
Since batteries typically start with higher capacity than the one rated by Apple, they’ll typically take longer to drop from 100% to 99% than every other percentage.

Some people have seen that since their overhead vs rated isn’t that high, their phones drop from 100% faster.

That specific percentage point is just luck of the draw.

I’d compare these 234 vs the next 234 for a better comparison.
 
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I have never charged my 15 Pro Max wirelessly. I have only used a 20W Apple charger, charging to 90%. With a 303 cycle count I’m at 90% battery health, on a phone I bought 12/23. Kind of bummed, this is the worst battery I’ve ever had.
 
Since it’s been well over a year since Apple introduced the iPhone 15 & the charge limits, there doesn’t appear to be a huge difference with BH on devices that have been charged to 100% or limiting the charge to 80,85,90% etc
 
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Momof2.1107 said:
My battery is never going to drop under 85%.
Click to expand...
My battery health is 88% cycle count 668. I think the worst thing i did is charging it in the car on the go 😕. I’m rethinking to just get a magsafe for extra juice. Does magsafe gives more stable charging than incar charging?
 
My 15 Pro is turning 1 on the 8th of April, battery health is at 97% after 253 cycles. I have it to limit charge to 80% and rarely charge it to 100%, maybe twice a month while traveling. I also use wired CarPlay and a slow charger to charge it a night. Have used fast charging but never wireless.

My previous iPhone was a 13 Pro and when it turned 1 year battery health was at 88% with the same usage.
 
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I am at 85% battery health with 620 cycles. I got AppleCare+ until November. Hoping I drop below 80% by then, otherwise might be tempted to just pay the $100ish to replace the battery.

Was thinking to either upgrade to the 17 series when that comes out, in which case I could gift my phone to someone with a fresh battery. Or if the 17 upgrades aren't took compelling (beyond design change) then keep the 15 Pro another year.
 
I'm surprised with how long it holds this generation of iphones. Charging limit makes all the difference...
90% of times charging wirelessly.... wtf :D
IMG_4876.PNG
 
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Gregintosh said:
I am at 85% battery health with 620 cycles. I got AppleCare+ until November. Hoping I drop below 80% by then, otherwise might be tempted to just pay the $100ish to replace the battery.

Was thinking to either upgrade to the 17 series when that comes out, in which case I could gift my phone to someone with a fresh battery. Or if the 17 upgrades aren't took compelling (beyond design change) then keep the 15 Pro another year.
Click to expand...
I am at 830 and 81% but my care+ ends in september. I think i will reach the 79% in Summer.
 
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18.4 has tanked both my battery life, and battery health, and I didn’t do any betas.

Was on 95%, after update down to 93%, 254 cycles. 15 Pro Max.
 
Last edited:
I don’t think it’s the betas that kill battery health, but rather than it’s only recalculated once in a while, typically after an update is installed. But someone please correct me if I’m wrong.
 
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Gregintosh said:
I don’t think it’s the betas that kill battery health, but rather than it’s only recalculated once in a while, typically after an update is installed. But someone please correct me if I’m wrong.
Click to expand...
Updates do seem to trigger a recalculation. But, I think, sometimes even just a reboot — maybe it must be a ‘hard’ reboot — can as well. It’s so rare most people reboot (or shut down) devices nowadays.

gower2352 said:
Not 15 but 16 PRO max not sure how I’ve been able to keep it at 100 lol
Click to expand...
Maybe/Probably?

forums.macrumors.com

An iPhone battery can last much more than 1000 cycles!!!

Ok so now I calibrated the battery once and the coconutBattery health aligned to battery health of the settings app. It displays 90% now, which should be the real SoH. And not the 100% from before. This shows that an uncalibrated battery management system can show a false health value for the...
forums.macrumors.com forums.macrumors.com
 
MacCheetah3 said:
Updates do seem to trigger a recalculation. But, I think, sometimes even just a reboot — maybe it must be a ‘hard’ reboot — can as well. It’s so rare most people reboot (or shut down) devices nowadays.


Maybe/Probably?

forums.macrumors.com

An iPhone battery can last much more than 1000 cycles!!!

Ok so now I calibrated the battery once and the coconutBattery health aligned to battery health of the settings app. It displays 90% now, which should be the real SoH. And not the 100% from before. This shows that an uncalibrated battery management system can show a false health value for the...
forums.macrumors.com forums.macrumors.com
Click to expand...
It does recalculate by itself without updating. But I can’t draw any conclusions as I’ve only used one iPhone on its original iOS version with the battery health feature.

I’ve used my iPhone Xʀ running iOS 12 from Aug 2019 to March 2025 on the same major and minor iOS version. No updates ever.

Its battery health went 100%-98%-94%(!!)-93%-92%-90%-89%. In 11 percentage point drops, the number actually dropped 6 times.

It’s at 89% health today, after 360 cycles and 5.6 years.
 
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FeliApple said:
It does recalculate by itself without updating. But I can’t draw any conclusions as I’ve only used one iPhone on its original iOS version with the battery health feature.

I’ve used my iPhone Xʀ running iOS 12 from Aug 2019 to March 2025 on the same major and minor iOS version. No updates ever.

Its battery health went 100%-98%-94%(!!)-93%-92%-90%-89%. In 11 percentage point drops, the number actually dropped 6 times.

It’s at 89% health today, after 360 cycles and 5.6 years.
Click to expand...
I didn’t mean to imply iOS never recalculates the (estimated) max battery capacity, condition. I meant that it appears to occur infrequently if the device isn’t rebooted.
 
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