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I can’t see any reason to use this feature unless you like to leave your phone plugged in all day while sitting at your desk. I had a ThinkPad with this feature a decade ago, and it served to protect the battery because I left it plugged in on my desk most of the time. That’s the only time keeping your battery at 80% makes any sense.
 
I can’t see any reason to use this feature unless you like to leave your phone plugged in all day while sitting at your desk. I had a ThinkPad with this feature a decade ago, and it served to protect the battery because I left it plugged in on my desk most of the time. That’s the only time keeping your battery at 80% makes any sense.

This is exactly what I do. Leave the the iPhone on a charger all day while at work. The difference with this is I’d leave the office with 80% battery instead of 100%.

There are also those who have it charging while driving around all day.

This feature benefits people like me. I wish the same feature is available for the iPad. For others, it’s an optional feature that they can just ignore.
 
The difference with this is I’d leave the office with 80% battery instead of 100%.

There are also those who have it charging while driving around all day.
Exactly. I can’t remember now if the ThinkPad had any way for it to automatically top up the way Optimized Battery charging does on iPhone, but I think it was just a software control down near the battery icon. Options are good. 😊
 
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I have started using it during the week because my phone is in the charger all day. I really hope they’ll make it easy to switch it on and off when you need a full charge.
 
Was excited for the 80% cap feature and set it immediately. I always give my mother my old phone when I upgrade, so ideally I'd like the battery to be as healthy as possible. Also, I found out that if the phone is still under warranty, no authorized service providers will touch the phone and replace it if the health is not under 80%, even if I want to pay out of pocket. Again, easier to just keep the battery healthy now.

Thanks to USB-C, the chances of a charger not being around is pretty much zero. Nintendo Switch charger? I can charge my 15 Pro Max. The USB-C cable that I use to charge my headset at work? It can charge my 15 Pro Max now too. Friend with an Android phone? I can use his cable now. USB-C is my favorite new feature by far.
 
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I turned it off again because I realized how silly it is. Why shouldn’t I use the longevity of my brand new iPhone 15 Plus battery to its fullest. Using it only between 80 % and 30 % is basically like using an iPhone that only has battery health of 80 % remaining after x years in the first place.

I no longer fast charge (unless I am on vacation) though! Also no more wireless charging. Too much heat. I think that’s what killed my 12 PM battery, not charging it to 100
It’s a feature added to appease the worry warts. I also don’t see the point. Much bigger deal for something like an EV that doesn’t have an easily replaceable battery.
 
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Thanks to USB-C, the chances of a charger not being around is pretty much zero. Nintendo Switch charger? I can charge my 15 Pro Max. The USB-C cable that I use to charge my headset at work? It can charge my 15 Pro Max now too. Friend with an Android phone? I can use his cable now. USB-C is my favorite new feature by far.
Does Apple make/sell MFi USB cables yet? If yes, I would stick to MFi USB cables.

 
It’s a feature added to appease the worry warts. I also don’t see the point. Much bigger deal for something like an EV that doesn’t have an easily replaceable battery.

It’s like when people put a screen protector on the iPhone screen to protect it from scratches and then never replace it, even after looking like a bomb exploded it on. So instead they are looking at a screen with bubbles, dust particles and scratches for 2+ years 😅
 
It’s like when people put a screen protector on the iPhone screen to protect it from scratches and then never replace it, even after looking like a bomb exploded it on. So instead they are looking at a screen with bubbles, dust particles and scratches for 2+ years 😅
I never understand this. I do get cases and protectors immediately after purchasing a phone, but if the case gets yellowed or the protector gets a bubble, I purchase a replacement immediately. That’s why I always get these cheap from amazon.
 
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I’ve changed my mind about this feature, for now. My battery VERY seldom drops below 50% and I have a MagSafe charger on my nightstand, on my desk, and in my car. The phone certainly spends MOST of its life above 80% so I don’t see any drawbacks by limiting it to 80%. If I’m taking an airplane trip somewhere, I’ll turn it off first.
 
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Battery management is somewhat like RPMs on a car motor, but of course may take a bit more planning. For most people, most of the time, automatic mode shifting gears at relaxed 2-3,000 RPM is fine to get from point A-B on a daily basis, and plenty of cars never see redline, ever. Then you get the sport car enthusiast / speed freak that puts the transmission into manual mode and revs that sucker to redline every shift, or maybe does track days with it. Better yet if it’s a lease and they can just trade it in for a new one every few years, so they don’t have to deal with later problems/issues (if any).

Everyone is different and it takes all types. The only thing I don’t understand, is how either side cannot seem to understand the other side.
 
I only use 20-30% a day so 80% is more than enough for me. I usually get a new phone every year but lately just do not see the point in it when the newest and hottest does very little more than the one year old phone. I got the 15 PM for the 5X lens which I knew would take great portraits. Very happy with the camera!

IMG_6061.jpeg
 
This is exactly what I do. Leave the the iPhone on a charger all day while at work. The difference with this is I’d leave the office with 80% battery instead of 100%.

There are also those who have it charging while driving around all day.

This feature benefits people like me. I wish the same feature is available for the iPad. For others, it’s an optional feature that they can just ignore.
Same for me. I’ll only charge to 100% if I’m going to be in a situation where I need a full battery. Otherwise, I don’t really need it to be past 80%.
 
I can’t see any reason to use this feature unless you like to leave your phone plugged in all day while sitting at your desk. I had a ThinkPad with this feature a decade ago, and it served to protect the battery because I left it plugged in on my desk most of the time. That’s the only time keeping your battery at 80% makes any sense.
Exactly! People who work in an office or at a desk often keep their phones plugged in all day to maintain charge but don’t necessarily need 100% for the rest of the day. There are a lot of people with desk jobs.

Anyone using CarPlay or just driving and using the phone will tend to keep it plugged in as GPS is a big hit to the charge levels. That is another case were you want to keep the battery from discharging but don’t need to keep it pegged at 100% all the time.
 
It’s a feature added to appease the worry warts. I also don’t see the point. Much bigger deal for something like an EV that doesn’t have an easily replaceable battery.
And may EVs do have an option to limit the default charge level for the same reason. Why not do the same on the phone?
 
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I turn this option on and off depending if I'm going to be home or out/to work.

If I'm home (which is usually like 1 or 2 days a week) I can manage the battery and keep it between 20% and 80%.
At home it's easy to manage since I have either wireless chargers and cables in every room of my home, and I usually check my phone way more at home.

At work or when I'm out, there's no way I'm looking at my phone. I either are simply not able to (at work) or simply don't want to (when I'm hanging out with friends)

The rest of the time I just charge my phone to 100% and use it all-day.
There's no way I'm not using 20% of my battery permanently, if battery technology was actually good on our planet, sure...unfortunately it just plain sucks.

IMHO there's very little point in trying to babysit the battery health of your phone long-term just so you can get a few days more use out of it instead of paying the 100 bucks to just replace the battery. Life's to short for this non-sense.
 
And may EVs do have an option to limit the default charge level for the same reason. Why not do the same on the phone?
I am the owner of an EV. We limit ours to 80% unless we're taking it on a long trip, which is something the manufacturer AND the charge screen recommend we do. Sometimes it sits for a couple days unused, especially in the winter, so the risk of swelling to such a large battery is real.

My iPhone, on the other hand, is used every day, rain or shine, for a zillion different things, and is expected to be there for me at a moment's notice no matter what I need to do. Besides my Mac it is probably the computer I use for most things. Even if I didn't upgrade frequently, I would still charge to 100% daily. I just refuse to fret this much over a battery in a phone when I can just replace the battery or phone when either one breaks or wears out for a pretty nominal fee compared to what an EV costs.
 
Batteries are supposed to be used, I've never had an issue with my battery health, of course it degrades over time, but I've never had an issue with it degrading faster than expected. I charge with a 5 watt adapter to protect the longevity of my battery, it charges overnight and lasts all day, so I am in no rush for my iPhone to charge. Optimised charging is enabled as well. Typically have gotten over 2 years of usage out of my phone battery which I'm more than happy with, in which it's about £80 to replace it or free with AppleCare+. I have not enabled the charging limit on my iPhone as my previous iPhones have always supported great battery usage, although longevity maybe improved by this feature, they support a lifespan I am happy with, I would get far greater usage out of an additional 20% everyday, rather than potentially improving longevity when battery are so easily serviceable in any Apple Store or AASP.

Although when it comes to other devices from other manufactures or EV cars, I potentially would enable the charge limit if the battery is a non-serviceable component or comes at a vast cost.
 
I am the owner of an EV. We limit ours to 80% unless we're taking it on a long trip, which is something the manufacturer AND the charge screen recommend we do. Sometimes it sits for a couple days unused, especially in the winter, so the risk of swelling to such a large battery is real.

My iPhone, on the other hand, is used every day, rain or shine, for a zillion different things, and is expected to be there for me at a moment's notice no matter what I need to do. Besides my Mac it is probably the computer I use for most things. Even if I didn't upgrade frequently, I would still charge to 100% daily. I just refuse to fret this much over a battery in a phone when I can just replace the battery or phone when either one breaks or wears out for a pretty nominal fee compared to what an EV costs.
The thing is, having this charging OPTION means that I don’t need to fret about the battery and its charging. At 80% it is always as much as I need and it helps protect the life of the battery. It is very rare that I would need more than 80% of charge on a given day and I can almost always predict that and could turn off this feature.

Since you seem to need 100% most of the time, feel free to stop fretting about this charging option. You’ll feel better.

We can and do have different needs.
 
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The thing is, having this charging OPTION means that I don’t need to fret about the battery and its charging. At 80% it is always as much as I need and it helps protect the life of the battery. It is very rare that I would need more than 80% of charge on a given day and I can almost always predict that and could turn off this feature.

Since you seem to need 100% most of the time, feel free to stop fretting about this charging option. You’ll feel better.

We can and do have different needs.
Wasn’t fretting at all.
 
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