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iPhone 15 Pro Max iPhone 15 owners, what is your cycle count and battery health?
- Thread starter bigjnyc
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Wow that’s spectacular battery health !
Myself I own a pro max too and I am already at 89% with 384 cycles…
Do you use any kind of battery limit like for example 80% ?
Myself I am using 80% limit lately - less heat producing.
No limits being used but I use wired charging 99% of the time, except when at the gym where I will place the phone on a wireless charger when doing the treadmill or elliptical walker.
I think I was just lucky, my phone had a lot more capacity than most when it was new so it has been able to take more charging cycles.
That’s crazy, as I am using wired charging only and in the beginning I had no limits too…
Now I have 80% and I think it’s better for my battery health, but I am not sure about it if it has any impact at all
Here's the battery health for my iPhone 15 Pro Max, purchased November 2024.
Charged nightly to 80%. When it occasionally upcharges to 100%, I will let it get down to 50% before charging it again.
As of August 22, 2025:
Maximum Capacity: 100%
Cycle Count: 76
Manufacture Date: July 2024
First Use: November 2024
Charged nightly to 80%. When it occasionally upcharges to 100%, I will let it get down to 50% before charging it again.
As of August 22, 2025:
Maximum Capacity: 100%
Cycle Count: 76
Manufacture Date: July 2024
First Use: November 2024
I don’t think the charging limits help much…I think it may also be more around the temperatures etc…your phone is exposed too, as both extremely cold and hot can also affect battery health overtime.
I live in Johannesburg, South Africa, our winters are not that cold and our summers are hot but not extremely hot.
When I work from the office my phone stays plugged into the charger as I use Stand By screen to keep track of my day (meetings etc…) and the time.
When I work from home same thing on my desk.
When driving the phone is plugged in and sitting in the center console of the car.
I basically let it charge to 100% all the time, to be honest I can probably count on one hand the amount times this phone has been under 50%.
Maybe that’s why, I usually let my iPhone fall down to 20-30% and then charge it up to 80% - but 100% I think it stays hot for to long
Keeping a device at 100% shouldn’t produce much, if any noticeable, heat as it should be a trickle charge just to maintain the level.
However, @Tsepz very first sentence is ironic as their usage (i.e., leaving a battery-equipped device connected to a charger more than not, especially far more than not and for extended periods) is the primary reason for a charge limit. As far as state of charge goes, exercising a battery, whether charging or discharging, is a fair/good thing. They age regardless, see “shelf life.” Because of the chemical reaction nature of how batteries work, they’re okay — again, will still slowly degrade — if left at a charge state of ~50% (+/- 10% ideally). However, sitting at the “extremes,” near 0% or near 100%, for lengthy periods (i.e., typically weeks or months) can/may cause irreversible damage. Therefore, we have the 80% charge limit, a median-ish compromise.
Anyway… Back to temps for a brief:
Batteries - Maximizing Performance
Maximize the life and lifespan of the rechargeable lithium-ion batteries in your MacBook, iPod, iPhone, and iPad.
www.apple.com
Keeping a device at 100% shouldn’t produce much, if any noticeable, heat as it should be a trickle charge just to maintain the level.
However, @Tsepz very first sentence is ironic as their usage (i.e., leaving a battery-equipped device connected to a charger more than not, especially far more than not and for extended periods) is the primary reason for a charge limit. As far as state of charge goes, exercising a battery, whether charging or discharging, is a fair/good thing. They age regardless, see “shelf life.” Because of the chemical reaction nature of how batteries work, they’re okay — again, will still slowly degrade — if left at a charge state of ~50% (+/- 10% ideally). However, sitting at the “extremes,” near 0% or near 100%, for lengthy periods (i.e., typically weeks or months) can/may cause irreversible damage. Therefore, we have the 80% charge limit, a median-ish compromise.
Anyway… Back to temps for a brief:
Batteries - Maximizing Performance
Maximize the life and lifespan of the rechargeable lithium-ion batteries in your MacBook, iPod, iPhone, and iPad.www.apple.com
I honestly think I was just lucky to have higher capacity from the get go , I am actually curious to know what my previous 15 PM would have been if it had not been stolen as I got that phone shortly after launch and treated much the same.
I think some people try bring the battery health situation down to usage too much (which is one of many factors unfortunately), where if you maybe got a phone that is closer to its actual design capacity (let us say the phone was at 102% versus one at 110%) you are bound to see “faster” health loss as the 102% device was closer to 100% health hence you will get some guy coming here 4 months into ownership and crying over hitting 99% sooner than others.