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Nope it actually pulls from the battery then the charger is constantly refilling it. That’s the part that damages it.
Source. Why would they implement a strategy that damages the battery without need? There are countless lithium devices that say plugged in nearly constantly without issue.
 
By the way. Here is a link from Microsoft about caring for your battery, storing at 100% and stating that smart charging increases longevity:




I read all about it after killing a Surface Pro 6, which I left in the charger 24/7 during the pandemic and I didn’t want to repeat the mistake on my Pro 8
 
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Being that I utilize wired CarPlay daily, and otherwise am almost near a charger always, I’m definitely using this feature.

My 1 year old, day one 14 Pro dropped to 89% in one calendar year. Prior to that phone I coincidentally didn’t have CarPlay when I had a 12 and never experienced that kind of capacity drain.

It seems like a larger than usual amount of folks reported massive tanks in their 14 Pro’s battery capacity, and while it’s probably a coincidental vocal minority, the 80% feature on the 15 seems like a no brainer for my use case. It’s been on and working accordingly for the last 24 hours and there’s been no impact on my usage patterns while not being a battery capacity stickler.
 
By the way. Here is a link from Microsoft about caring for your battery, storing at 100% and stating that smart charging increases longevity:



No that‘s just affirming my point. You need a manufacturer to say, please unplug your device after a full charge. That strategy is more damaging, not less.
 
No.

I cannot believe how quick this thing charges! I am running a 20w anker charger. Considering just running my old 5w with a USB C adapter to reduce the heat a little!
 
Nope it actually pulls from the battery then the charger is constantly refilling it. That’s the part that damages it.
Actually, undesirable side reactions occur more quickly at a high state of charge. I don't think it's pass through charging that is causing capacity loss. It's also not clear to me that this purely passthrough charging is really implemented ... for example, on macbooks the battery can still drain even when on the charger if the load is very high ... it will pull from one or both as needed.
 
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Actually, undesirable side reactions occur more quickly at a high state of charge. I don't think it's pass through charging that is causing capacity loss. It's also not clear to me that this purely passthrough charging is really implemented ... for example, on macbooks the battery can still drain even when on the charger if the load is very high ... it will pull from one or both as needed.

Really isn’t a question of the reactions, it is if staying at 100% is more damaging, than unplugging and starting a fresh cycle. Clearly, that is not the case. People leave laptops plugged in for years.

That particular MacBook trait is because the peak load of the MacBook is higher than the capacity of the charger. It is somewhat tangential to the point, but not sure if peak load of iPhone is ever higher than 15 watts. Even if so, you need that to be more damaging than starting another cycle for your point to hold up.
 
I would if it was configurable with automations. I’d love to have my morning automation flip this on for when I have my phone sitting on my office desk MagSafe charger all day.
 
I like this feature, I would love to have the ability to create a shortcut for this to switch it on/off easily.

I work at a desk and have my phone plugged in or near a charger for the majority of the day, so I don't really need that 20% capacity most of the time, and when I go out I usually carry a little battery pack to go along with me.

I'd rather be able to just leave it plugged in and stay at 80% than worry at all. My 14 Pro is less than a year old and is down to 91% battery health, which is really annoying.
 
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I've been using AlDente on my M1 MBP since it was new, and my battery capacity is still over 93% (according to Coconut Battery). So I'm definitely going to give this 80% setting a shot on my iPhone. I'll let it go to 100% on travel days and such, but most of the time I'm near a charger anyway.
 
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No. All my phones I have had always had 100% battery health by the time I traded them in or sold them. I guess I am not a power user.
 
I would if the phone I had supported it. Alas it does not. So I manually charge to 80 and every month or so go to 100 so the battery gets a full workout. 80 works for my workday. I'm shocked at how many people get so angry or put-off about something they cannot comprehend nor affects them.
 
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I don't see the point of getting the phone and not using that 20% of battery. Unlike electric cars, I plan to replace my phone more often so I will use the battery life to the max 😉. Besides that, one of the reasons I'm upgrading from a 13 Pro to a 15 Pro Max is because my 13 Pro was dying before the end of the day while I was on trips.
 
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