Just a 15 pro here and i only recently switched it to 80% max charging. After a year, max capacity is down to 89% and my cycle count is 345.
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Apple's 80% Charging Limit for iPhone: How Much Did It Help After a Year?
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I think it’s a waste of time especially if you have AppleCare+
These new phones are so good with battery management that in the long run the extra 20% would likely end up benefiting you much more than the possible slowdown on the rate of battery degradation
These new phones are so good with battery management that in the long run the extra 20% would likely end up benefiting you much more than the possible slowdown on the rate of battery degradation
Life's to short to cripple your battery life, to save having a crippled battery... by Crippled battery, a few percent difference when it comes to sell/trade in. I doubt it has much effecrt on value, unless battery is properly knackered after several years.
I still don’t get it. Why limit yourself to a phone with 80% battery capacity now just to avoid having a phone with 80% battery capacity in 2-3 years?
Good to know that option is as unnecessary as I expected.
My 15 Pro Max had just dropped to 91% with around 310 cycles before I upgraded. Charged when and how I wanted, mostly MagSafe, occasionally wired with a charger that can charge as fast as it will allow.
My 15 Pro Max had just dropped to 91% with around 310 cycles before I upgraded. Charged when and how I wanted, mostly MagSafe, occasionally wired with a charger that can charge as fast as it will allow.
My iPhone 15 is also at 100% battery health after 140 cycles—not sure how the cycle count is so low; perhaps it’s just that I’m not a super-heavy user—with the 80% charge limit enabled for almost the entire time I’ve had it (since Oct. ‘23).
Thinking about upgrading to a 16 plus for the extra battery life and screen real estate (not to mention leap in chipset) and since the base models seem to run cooler.
Once I switch to my iPhone 16 Plus, I will likely keep the limit at 85%.
Agreed.
If you use this setting, you run the risk of it going dead on you during the entire time you own it - if you don't, you'll get to use it all day with ease for probably about a year and a half before it starts dying early due to battery wear.
Might as well get the full battery life out of it from day 1.
575 cycles after almost exactly 1 year of use, and still on an impressive 92%.
I charge overnight on MagSafe, during the day I charge with a mixture of fast charging (wired) and occasional slow charging (12w).
For the first 5-6 months I limited charge to 80% then I just kept it at 100% with optimised charging.
I suspect that people with poor battery capacity in an unreasonably short amount of time either got a bad battery or charged the phone in a hot car (which I've been told can be devastating to a battery's capacity).
What this shows is that even when set to 80%, the capacity will still steadily drop logarithmically and probably settle around 80% where it will literally hang around there for years. There is reason why Apple only replaces batteries with less than 80% battery capacity because that indicates a problem with the battery.
If you are in a situation where you always have 50% or more battery by the time you put it in the charge -- sure, you can probably squeeze out a little bit more capacity over time by setting the charge limit to 80%. If that 80% limit is causing you to just charge your iPhone more often, I wouldn't be surprised if that is just as detrimental.
How absurd is it that we are intentionally gimping our battery so that we don't end up with a gimped battery?
What this shows is that even when set to 80%, the capacity will still steadily drop logarithmically and probably settle around 80% where it will literally hang around there for years. There is reason why Apple only replaces batteries with less than 80% battery capacity because that indicates a problem with the battery.
If you are in a situation where you always have 50% or more battery by the time you put it in the charge -- sure, you can probably squeeze out a little bit more capacity over time by setting the charge limit to 80%. If that 80% limit is causing you to just charge your iPhone more often, I wouldn't be surprised if that is just as detrimental.
How absurd is it that we are intentionally gimping our battery so that we don't end up with a gimped battery?
We don't use 100% of the battery every day.
We have chargers in the office and power banks should the need arise.
The more damaging part is keeping the device at 100% for longer periods of time. Charging it once and then using it is less harmful than keeping it at 100% overnight.
My wife's iPhone 14 Pro always was set to a 80% limit and has 370 cycles at 94%. The target is 500 cycles at 80% for these batteries. Also limiting it on my M1 MBP shows a higher capacity than others comparing it in CoconutBattery. But aside from 100% charging, draining it to 0-20% also does harm.
It's like UV radiation. It doesn't kill you if you get sunburnt a few times but it surely will if it happens regularly. Another good read from another thread I have replied to: https://forums.macrumors.com/thread...fast-charging-via-usb-c.2435978/post-33386403
My wife's iPhone 14 Pro always was set to a 80% limit and has 370 cycles at 94%. The target is 500 cycles at 80% for these batteries. Also limiting it on my M1 MBP shows a higher capacity than others comparing it in CoconutBattery. But aside from 100% charging, draining it to 0-20% also does harm.
It's like UV radiation. It doesn't kill you if you get sunburnt a few times but it surely will if it happens regularly. Another good read from another thread I have replied to: https://forums.macrumors.com/thread...fast-charging-via-usb-c.2435978/post-33386403
I turned off the 80% limit on day 1 on my iPhone Pro 15. Am at 98% capacity with 253 cycles. I mostly use magnetic charging unless driving long distances (<10x per year). Guess I will have a new iPhone before it reaches the 90% limit anyway.
Almost always at 80% with the exception of 5 or so full charges for long days of flying.
My understanding is that going extremely low on charge (under 20%) is also hard on the battery. So if you limited to 80 but then regularly ran really low, you might not have much advantage. Best would be to recharge to 80 before getting below 20....I would think. But probably not worth being overly obsessive about it....just use it as a general guideline.
I'm trying this now with my new iPhone 16 pro. It is a bit weird to notice my battery is at 50% half way through the day but so far I've had enough battery. I typically won't need to top it off before night, but I most always have a charger near by. Even when I cycle and use the phone for music I carry a small power bank (partly because I also have a cool battery powered mini bike pump). I suppose if I start running out of power early too often I'll just bump up the 80% to something higher.
The scientific data shows shallow charge and discharges are less harmful to the battery.
In the long term, an 80% habit could potentially get 50-100% more cycles compared to a full charge/discharge practice.
Please, the iPhone 15 Pro Max goes nowhere near dead at 80%. I'm typically from 80% --> 40% during the entire day.
If I put this thing at 100% battery, this iPhone 15 Pro Max will last multiple days without charging.
Spend $149-$199 for AppleCare just in case the battery wears out within 2 years?
Cheaper to pay $99 or $119 (or less at an independent shop) when you need it, which more than likely will be closer to the 3 year mark.
Yeah, I've heard that too. I figure that if it gets near 20% I need to charge it anyway to avoid having it die right when I need it most.
15 Pro using 80% limit (except 3-4 times this year). Was wired charging half the year then switched to a Qi2 charger (using my phone as a clock at night now in standby mode).
98% capacity and 223 cycles. I work from home, though. So don't usually need to charge it during the day.
98% capacity and 223 cycles. I work from home, though. So don't usually need to charge it during the day.
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