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You paid paid for it so use it how you want, but do people not think about the 2nd, 3rd, 4th owner of phones? Even though you only keep it a year or 2, it will likely be resold to another user. If the original owner makes a very small effort to preserve the battery, then the next owner (or the reseller) won't have to replace the battery. So in the long term fewer batteries need to be produced.

Personally I've been trying to limit my charging for years using a smart switch that only charges my phone for 1 hour per night. My launch day 13 pro still has 93% battery health with heavy usage.
The thing is, I’m trading it in to Apple. They’re going to swap out the battery anyway, to sell it or use it as a warranty replacement phone.

If I were still selling my phones privately, or handing them down to family, it would make more sense to preserve battery health as much as possible.
 
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To me it seems a little strange to limit your full charge to 80%, in an effort to prevent battery health reducing your full charge …….i get the argument to keep battery healthy but realistically you won’t lose 20% health in 2-3 years anyway- all you’re doing is reducing it 20% on day 1
 
So….let me get this straight. In order to make sure your battery holds its full capacity for the longest period of time, you’re going to…never run it for its longest period of time? A little self defeating, no?
Just because my car can go 0-60 in 5 seconds should I be doing that every time I accelerate? I guess you could argue I’m wasting the capabilities of the car, but it would cause extremely accelerated wear and wouldnt be very efficient

I don’t use any of my things in such a way as to drastically shorten their lifespan, it’s wasteful and bad for the environment
 
Just because my car can go 0-60 in 5 seconds should I be doing that every time I accelerate? I guess you could argue I’m wasting the capabilities of the car, but it would cause extremely accelerated wear and wouldnt be very efficient

I don’t use any of my things in such a way as to drastically shorten their lifespan, it’s wasteful and bad for the environment
Not a great analogy that.
A better analogy would be only filling your car up with gas to 80%, but you need to go on a long trip and there’s no gas station in between and it was unforeseen. Your analogy is wrong because your car can do 0-60 very quick IF NEEDED on demand. Your phone can’t do that, it would need charging again to get that extra 20%
 
I could see the point of it if you keep the phone on 100% on charger a lot - being fully charged for long periods is the worst for the battery. Maybe for those who use nightstand feature while plugged in
 
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I limited my iPhone 13 Pro Max with a Automatisation and a smart socket to 85% state of charge.
After 2 years it says 99% capacity left.
The phone now goes to my father and battery replacement isn’t necessary.

I limit the charge of my iPhone 15 pro with the build in setting to 80% now.
The problem is I can’t flip it to charge to 100% easily. Seems like a feature that wasn’t fully fledged out.
 
Yeah I turned the 80% limit on. I never really get down to lower than 50% battery so it’s pretty academic for me.

Be nice to have a more fresh battery for the next owner who will probably be my wife.
 
I could see the point of it if you keep the phone on 100% on charger a lot - being fully charged for long periods is the worst for the battery. Maybe for those who use nightstand feature while plugged in
I guess maybe it depends on how long you’re wanting to keep the phone. My old lady works from home. She has a launch day 14pm. She keeps her phone on an anker wireless charging stand at her desk while she works…all day, and her battery health is still 100%
 
Does anyone know if this setting will also work for iPhone 13s, or is it only available on the new phones?
 
Why does everyone obsess over this? I charge my phone when I feel it needs it. Or if I’m gonna need the boost to get through the rest of the day. Phone goes on charger at night. Charge to 100% every night. Never had the battery health fall below 98%.
You're on a forum for very serious iPhone users.

Hence their will be those focus on the most minute of details.

Or... they're that poor.

5 years ago my dad gave his 2yo iPhone to his poor brother that made no more than $4,400 annually. Fella thought buying a 3rd party battery sourced from Amazon US is the bee's knees.

He spent an hour during New Year's Day talking about the merits of charging up to 80% and was asking me if their was an automated way to do this.

Our family replace all our flagship iPhone Plus & now iPhone Pro Max every 24 months. So we do not really care about battery degration as we sell it at junk value.

Although unintentionally we have been 12W slow charging with desktop chargers and 30W fast charging with car chargers.
 
Not planning to turn that setting on, I’d rather just get the battery replaced when needed.
 
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You're on a forum for very serious iPhone users.

Hence their will be those focus on the most minute of details.

Or... they're that poor.

5 years ago my dad gave his 2yo iPhone to his poor brother that made no more than $4,400 annually. Fella thought buying a 3rd party battery sourced from Amazon US is the bee's knees.

He spent an hour during New Year's Day talking about the merits of charging up to 80% and was asking me if their was an automated way to do this.

Our family replace all our flagship iPhone Plus & now iPhone Pro Max every 24 months. So we do not really care about battery degration as we sell it at junk value.

Although unintentionally we have been 12W slow charging with desktop chargers and 30W fast charging with car chargers.
I’m aware. Im not trying to come off insulting if that’s how I came off. Just generally curious. I think we tend to be a little to cautious and ocd about some of these things. Most of us here upgrade every year, with most of the rest of us every 2 years, and a few that actually hold onto their phones longer than that. 3 year mark surely you would see more impact from the decline in battery health, but doubtful you’ll notice much from 1-5% in the average 2 year life cycle of the phone.
 
That's apparently by design. Every so often, it will charge to 100% to ensure it stays calibrated. I read that here.

Interesting article!

Hasn't the whole iPhone battery calibration thing been debunked, though? What I mean by that is, my understanding is it isn't necessary.

I'm sure a few people from Apple came out and said it, too. I'll see if I can find any sources.
 
I’m aware. Im not trying to come off insulting if that’s how I came off. Just generally curious. I think we tend to be a little to cautious and ocd about some of these things. Most of us here upgrade every year, with most of the rest of us every 2 years, and a few that actually hold onto their phones longer than that. 3 year mark surely you would see more impact from the decline in battery health, but doubtful you’ll notice much from 1-5% in the average 2 year life cycle of the phone.

This is an enthusiast forum. So you get a very high concentration of disappointed iPhone mini users are with Apple & claiming never to buy from them again until they revive the iPhone mini. They use "I love my iPhone mini" as if it were a punctuation mark.

You read it that often that you think 1 of 3 iPhone users bought a mini.

cirp-iphone-purchases-march-2022.jpg


As late as 2019 the 2Y phone upgrade cycle is mostly dead.

00XK89eWyIC94invt66wuEv-4.fit_lim.size_1600x900.v1569486766.png


Source: https://www.pcmag.com/news/the-2-year-mobile-phone-upgrade-cycle-is-mostly-dead
 
Makes zero sense. People are worried about it not lasting but it will take several years to hit 80% in life.
My 2021 iPhone 13 Pro Max 128GB that I got at local launch just turned 97% last week.

I just use it for work and not to recreational use.
 
It seems incredibly odd to intentionally limit your phone capacity to 80% daily as a way to stop your phone slowly going from 100% to 80%.

It’s like trying to escape a problem by intentionally creating it

The idea is, it allegedly helps with battery health, for those who care about it.

Apple haven't officially said what the feature is for, though.
 
My answer to this is not a simple yes or no. Sometimes I will use this feature. During my day to day I rarely use the entire battery of my iPhone so Monday-Thursday I would most likely have it turned on. However on weekends I tend to be away from power for longer periods of time so I would allow the phone to charge completely in that case. Would be nice if there was a on screen prompt that you could press when putting your phone on charge to allow it to top charge to 100.
 
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