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Even on Apple's support document, it doesn't say what the benefit is. https://support.apple.com/en-us/108055

I understand why it makes sense to not fast charge the top end of the battery, but what are we saving by never charging above 80%?

You increase your battery’s useful lifespan, so can use your iPhone for longer with its original battery. If you are on a long (3-5) years upgrade cycle, this can be useful.
 
Where can I get that wallpaper in the first image?!

Edit: a Google lens search found it.

IMG_2233.jpeg
 
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Good idea, but could we get this on the MacBook Pro? That would be a very useful feature.
 
They changed to lower quality batteries since iPhone 14 this feature is just to hide what they did. Trying to convince users to use 80% creating the illusion of a better battery.
On the contrary, I find that the battery for iPhone 15Pro Max battery is of a much better quality
 
Whatever they recommend for battery life should be what they announce as 'all day battery life.'

SSDs have done this for years. When you buy a 1TB SSD, it is actually like a 1.1-1.2 TB SSD, but wear leveling only allows the 1TB to be used in order to prolong the lifespan. Something similar should be in place for batteries if that is the intention.
 
Yes, but you are rich and can afford to replace the battery or the entire phone. But what if living in Oklahoma where a "good job" pays $18 per hour or what if you were in China where the pay is even lower?

Most people in the world are not rich and postponing a repair that would cost them 10 or 40 hours of their labor is a very valuable thing.

For you and me, a few hundred dollars is not a big deal. But for 80% of the world, it is s big deal.
I’m not sure what prompted you with this kind of reply, but since this feature is limited to iPhone 15 and presumably later - anyone who can afford an iPhone 15 can afford to replace the battery in 2,3 or 4 years timeframe…
 
Do you run your phone down to 0% every day? I don’t get near that.
The root cause of conservatism of all kinds is fear. Fear is not rational so you can't argue with them, Fear of running out of power overrides the mathematical-based knowledge that you only need 60% of capacity before you will be near a charger again. Our degree of response to fear might be genetic. This can be modified be education of just exposure.
 
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I’m not sure what prompted you with this kind of reply, but since this feature is limited to iPhone 15 and presumably later - anyone who can afford an iPhone 15 can afford to replace the battery in 2,3 or 4 years timeframe…
Again, a first world response, a lot of people buy right at (or over) their limit of affordability and then to do that take out a loan. So there you are with a 48 month loan and after 2 years you have to replace the phone. You still have to pay for the old broken phone for two more years. But it is only a phone. but it is the single most expensive thing you own.

I agree that the problem is overspending. If you make $7 per hour you should be thinking about used phones. But not everyone is rational in this way.

Even here in the US, do you know how many people are at risk of missing a rent payment if an unexpected car repair is needed? That situation is VERY common. But likely rare among people who read this forum.
 
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I’m not sure what prompted you with this kind of reply, but since this feature is limited to iPhone 15 and presumably later - anyone who can afford an iPhone 15 can afford to replace the battery in 2,3 or 4 years timeframe…

Again, a first world response, a lot of people buy right at (or over) their limit of affordability and then to do that take out a loan. So there you are with a 48 month loan and after 2 years you have to replace the phone. You still have to pay for the old broken phone for two more years. But it is only a phone. but it is the single most expensive thing you own.

I agree that the problem is overspending. If you make $7 per hour you should be thinking about used phones. But not everyone is rational in this way.

Even here in the US, do you know how many people are at risk of missing a rent payment if an unexpected car repair is needed? That situation is VERY common. But likely rare among people who read this forum.
I was shocked that someone would post something as myopic as what jz0309 did. Some of us live in a bubble and think that the entire world has the same resources that we do.

This is actually a very big deal for preserving battery life. In fact, I should be able to set my battery limit to 60%. I can wake up, go to the gym, shower and get to work and still have over 25% battery, where I can charge back up to 60-80%.
 
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I was shocked that someone would post something as myopic as what jz0309 did. Some of us live in a bubble and think that the entire world has the same resources that we do.

This is actually a very big deal for preserving battery life. In fact, I should be able to set my battery limit to 60%. I can wake up, go to the gym, shower and get to work and still have over 25% battery, where I can charge back up to 60-80%.
If it makes you feel better from what I’ve read, the affect of charging on battery life is non-linear. It has little effect on much of the battery range but increases quickly as you get closer to 100%. That is why most people consider 80% to be a reasonable charge max. Charging lower probably is not significantly better for your battery than 80. But each step up from there has more impact and more impact.
 
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This would be great if it could dynamically apply it to my second charge of the day, which is required to get through the day.
 
Apple has gone from not allowing this at all, to actively pushing the feature in the span of two years.

I wonder what caused their change of heart?

Because it got popular on Mac with 3rd party apps, so Apple followed suit on their iOS devices?
 
The regulation doesn’t apply to smartphones.
lol how is that so? Smartphones are the most obvious devices that the regulation would be aimed at. Otherwise what type of devices would you target with that type of legislation? Like laptops or tablets? Certainly not in the first place.
 
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But they have to comply anyway... batteries must be user replaceable by 2027 in the EU.
I’ve seen posts saying that they’re testing the option of using new battery adhesive strips, that would allow users to do the replacement themselves with apple’s self-repair program, so technically they would probably comply with it that way. But my take was more towards the fact that that kind of settings would prolong battery life and therefore delay the necessity of replacing a battery, which is going to be regulated by the EU sometime soon.
 
I’ve seen posts saying that they’re testing the option of using new battery adhesive strips, that would allow users to do the replacement themselves with apple’s self-repair program, so technically they would probably comply with it that way. But my take was more towards the fact that that kind of settings would prolong battery life and therefore delay the necessity of replacing a battery, which is going to be regulated by the EU sometime soon.
The law dictates that it must only require standard household tools to replace - torx etc. But of course adhesive is probably fine once opened.
 
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This is looking more and more like something in the hardware of the iPhone 15 models that allows the charging limits as well as this new feature. Maybe something controlling the USB C port or the battery controller itself?
Very unlikely as the optimized battery charging exists on the older iPhones, which means they are capable of holding at 80%…
 
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