I particularly liked when one of them (Siracusa?) said the difference between a series 7 and 10 watch was a big deal. lol. you And I are not the same
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Apple's 80% Charging Limit for iPhone: How Much Did It Help After a Year?
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I particularly liked when one of them (Siracusa?) said the difference between a series 7 and 10 watch was a big deal. lol. you And I are not the same
iPhone 15 Pro Max launch day.
94% Maximum Capacity
347 Cycle Count.
Majority of the time it was on the 80% cap and charged via USB-C. There were a few times I set it to 100% if I knew I was going to be out all day. I limited Qi charging to minimize heat on battery (previously used iPhone 12 Pro Max). I don't plan on upgrading until iPhone 20 so trying to maximize the battery (realistically, I'll probably do one battery replacement)
94% Maximum Capacity
347 Cycle Count.
Majority of the time it was on the 80% cap and charged via USB-C. There were a few times I set it to 100% if I knew I was going to be out all day. I limited Qi charging to minimize heat on battery (previously used iPhone 12 Pro Max). I don't plan on upgrading until iPhone 20 so trying to maximize the battery (realistically, I'll probably do one battery replacement)
I've had my iPhone 15 Pro since launch and have been running the 80% limit since the beginning. Currently sitting at 98% with 228 charge cycles. I'm going to keep using it through this phone's life to see if it really makes a difference. My iPhone 12 Pro was at 89% when I traded it after 3 years, and I'm curious if this will happen again.
iPhone 15 Pro Max. Capacity 97%, cycle count 225. Always charge to 100% using MagSafe at home and keep it plugged into the car when driving.
I set my 15 Pro Max to 80% charge limit when I got mine on release day. I keep my phone plugged in with a cord during work and on a wireless charger every night. I’m at 208 cycles and 99% battery health. I average about 8-10 hours of screen time a day (I usually have YouTube on in the background)
Have predominantly charged it with the 5w USB-A on my wall socket at home - only a handful of times have I made use of the faster charging when it’s plugged into my MacBook Pro.
still on iPhone 14 PM i cant contribute anything in regard to phone to the discussion, but on the MBP i used that feature for 3 months and coconut reported 92% health with 30 cycles. turned it off and after another 3 months the battery has 70 cycles and coconut shows 99% health. strange, cringe, weird? i dont know, and honestly dont even care.
i simply charge anything to 100%, phone, Tablet, Mac, cordless drill and screwdriver, toothbrush, whatever, and just use the stuff. if the battery is low, i recharge. if the battery shows wear or age, either replace it or the complete device. one can get obsessed with battery health or scratches, or just use the stuff, because, you know, its the purpose of the stuff to use it. does anyone fill only 80% gas or 80% pressure in the tires? i paid for the battery lifetime in the specs, why would i not use it?
those concerned with their iPhone battery, do you care about that the same way on everything you own with rechargeble batteries built in?
i simply charge anything to 100%, phone, Tablet, Mac, cordless drill and screwdriver, toothbrush, whatever, and just use the stuff. if the battery is low, i recharge. if the battery shows wear or age, either replace it or the complete device. one can get obsessed with battery health or scratches, or just use the stuff, because, you know, its the purpose of the stuff to use it. does anyone fill only 80% gas or 80% pressure in the tires? i paid for the battery lifetime in the specs, why would i not use it?
those concerned with their iPhone battery, do you care about that the same way on everything you own with rechargeble batteries built in?
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Keep doing what you're doing and in a couple years you'll have twice the capacity as when it was new
Meh. It took 3 years of mostly MagSafe charging for my 12 Pro Max to go below 80% and need a new battery while charging to 100% nightly. Took $80 and an hour of my time to have them put a new battery in and give me 100% capacity again. Yeah, I don’t think I’ll artificially limit my battery capacity.
97% battery health has more battery capacity under full charge than 90% of the same battery. I think it’s rather objective. There may be slight margin of error but 7% is not within the margin I guess. There will be difference.
Most importantly, I don’t have any degradation of user experience because when I need the battery life I have 100% of it (or 97% only starting from the 10th month or so). When I don’t need it during a typical work day in office, my phone is always kept at 80%. It’s well sufficient.
But I do see your point. I guess heat may be a worse enemy for battery health.
If the phone is under constant heat, the battery health will surely take a stronger hit. As seen by some users who report poor battery health even with 80% turned on.
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Under iOS 18 there is, for 15 and up. 80%, 85%, 90%, 95% or 100%.
273 cycles with 99% max capacity. Charge limit set to 100%. iPhone 15 Pro.
With the iPhone 15 models that came out last year, Apple added an opt-in battery setting that limits maximum charge to 80 percent. The idea is that never charging the iPhone above 80 percent will increase battery longevity, so I kept my iPhone at that 80 percent limit from September 2023 to now, with no cheating.
My iPhone 15 Pro Max battery level is currently at 94 percent with 299 cycles. For a lot of 2024, my battery level stayed above 97 percent, but it started dropping more rapidly over the last couple of months.
I left my iPhone at that 80 percent limit and at no point turned the setting off or tweaked it. There were some days when I ran out of battery because I was without a charger for most of the day, and there were other times that I had to bring a battery along to make sure I didn't run out of power. It wasn't always convenient to keep it at 80 percent, but there were days when it didn't have too much of an impact.
It was always a treat when the iPhone randomly decided to charge to 100 percent, which is something Apple has baked in to the 80 percent limit to ensure the battery level stays calibrated.
For the most part, I charged using USB-C rather than MagSafe, but there was some MagSafe charging mixed in. There was probably a 70/30 split between wired charging and MagSafe charging. I did often let my battery get quite low before charging, and it didn't sit on the charger for long periods of time too often. Most charging was done in a room at 72 degrees. I'm adding this context because temperature is a factor that can affect battery longevity, and wireless charging is warmer than wired charging.
You can compare your level battery to mine, but here are a couple other metrics from MacRumors staff that also have an iPhone 15 Pro Max and did not have the battery level limited.
I don't have a lot of data points for comparison, but it does seem that limiting the charge to 80 percent kept my maximum battery capacity higher than what my co-workers are seeing, but there isn't a major difference. I have four percent more battery at 28 more cycles, and I'm not sure suffering through an 80 percent battery limit for 12 months was ultimately worth it.
- Current capacity: 87%. Cycles: 329
- Current capacity: 90%. Cycles: 271
It's possible that the real gains from an 80 percent limit will come in two or three years rather than a single year, and I'll keep it limited to 80 percent to see the longer term impact.
I did set my iPhone 16 Pro Max to an 80 percent limit, but I don't know if I want to continue the test given the lackluster results I had from 2023 to 2024. Will the thermal changes in the iPhone 16 models make any difference? Maybe, maybe not. There's a 90 percent charge limit option too, and that might be more feasible than 80 percent for most people, especially those that have phones with smaller batteries.
Let me know your current battery capacity and cycle count in the comments below, and weigh in on whether you think Apple's limits are worthwhile.
Article Link: Apple's 80% Charging Limit for iPhone: How Much Did It Help After a Year?
