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Apple's 80% Charging Limit for iPhone: How Much Did It Help After a Year?
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Because it's almost USD 400-500 more expensive for a pro max model in EU compared to US.... technically apple care plus + alpha is embedded in the price you paid for.
I always turn the optimized charging off, charge overnight and no way would i limit my battery to 80%. All my phones were above 90% after two years (my usual upgrade period) with a good mix of usb charging and wireless charging.
My launch 15 Pro is at 96% with 187 cycles.
Just use your phone and charge it.
My launch 15 Pro is at 96% with 187 cycles.
Just use your phone and charge it.
iPhone 15 pro - 230 cycles, 100% . almost exclusively wireless charging. I had it at 80% for a few weeks and realized I was forcing myself to suffer the effects of a degraded battery when the battery wasn't even degraded. That made no sense to me.
But 3 year warranty in Europe? Probably for some issues due to manufacturing or something like this but it won’t cover a highly degrading battery.
Day 1 80% max charge
Always used iPhone charger and Apple 20 watt adapter
Always used iPhone charger and Apple 20 watt adapter
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Yes I know about extending AppleCare on a month to month. For me, it’s not worth it. It would have been money better spent buying new items. The calculus could be different for others.
Yes. As someone who has a 12-year-old EV still getting 90% factory range on the original battery and a 20-year-old Nintendo DS still functioning on the original battery, I’d say I’m doing something right.
I’m in favor of future models having limiters down to 50% since phones have matured and even 80% is in overcharge territory, voltage-wise.
Given what I have just read (24 pages of comments), it seems this battery life is ether a completely random reading OR it actually may depend on personal usage. Given I always keep my iPhone 15 at 80% since day 1 and never go below 20% I should have been experiencing 98% capacity at 291cycles ….but it’s 92%
…..my MIL (same model same date of purchase about same cycle range) has exactly 98% and she never limited to 80% ….always charges to 100%. Our usage differs significantly though, I’d say mine is twice as heavy as hers.
…..my MIL (same model same date of purchase about same cycle range) has exactly 98% and she never limited to 80% ….always charges to 100%. Our usage differs significantly though, I’d say mine is twice as heavy as hers.
I don't know, it was my 14PM that I just replaced last week. Had it 2 years. Battery capacity was around 84%. I just meant in general, I've read charging your phone to the point of heating it up is bad.
Hello! I have been using the iPhone 15 Pro Max for a year. As for the battery. I have it set to 100% charging limit. I charge it mostly in the evening, often during the day as well. I rarely drain the battery below 50%. I have 202 cycles after one year of use. I still have 100% battery health.
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?
iPhone 15 Pro Max since November 2023; no 80% battery limit used; 219 cycles and 94% capacity now.
BTW, Tesla is doing the same (ie suggesting to charge only to max 80% for daily usage) with their cars, so there must be some benefits from limiting to 80%.
BTW, Tesla is doing the same (ie suggesting to charge only to max 80% for daily usage) with their cars, so there must be some benefits from limiting to 80%.
The variable they didn't quantify/consider is heat, and it probably has as much or more to do with battery life than how you charge it.Given what I have just read (24 pages of comments), it seems this battery life is ether a completely random reading OR it actually may depend on personal usage. Given I always keep my iPhone 15 at 80% since day 1 and never go below 20% I should have been experiencing 98% capacity at 291cycles ….but it’s 92%
I live in Arizona, where our daytime high temperatures are over 100°F/38°C virtually every day from late May until early October, and my phone is outdoors with me almost every day - sometimes for 6-8 hours a day. From late June until late August, we rarely have daytime highs below 110°F/43°C and our nighttime lows are in the 90s. Park your car for a while in the sun and it's over 140°F when you get back into it and everything you touch burns you. I do my best to keep my phone out of the direct sunlight, but I'm not always successful and I usually over-temp it and get shutdowns at least a few times every summer.
I'd be pretty willing to bet that if I compared my phone's battery health against somebody who lives in a cooler climate with equal age/charging cycles/methods, their battery health would fare a lot better than mine.
Not true. 80% corresponds to the nominal voltage of the cells (3.6v). The last 20% is an overcharge to around 4.2v. True of any lithium based cell.
iPhone 11 Pro Max
Probably about 1800 cycles (5 years old, daily use)
Never turned in any battery optimisation at all
Max charge is now 79% and noticeable how quickly it drains.
Probably about 1800 cycles (5 years old, daily use)
Never turned in any battery optimisation at all
Max charge is now 79% and noticeable how quickly it drains.
I had the same issue with iOS 17.6.1. Lost 4% in a few days, even though I didn’t do anything different. Stopped when upgrading to 18.