The charging circuit can run independently of the OS, which is why you can charge with the phone off.
This new 80% hard limit likely required a change to the charging circuitry so that it will work. = new hardware
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iPhone 15 Models Feature New Setting to Strictly Prevent Charging Beyond 80%
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This new 80% hard limit likely required a change to the charging circuitry so that it will work. = new hardware
I’d rather have this on iPads. I keep the iPad a lot longer . My phones battery has never degraded that bad int he 1-3 years i usually keep them.
You can almost triple your charge/discharge cycles.
Great articles here:
It’s absolutely unacceptable this isn’t a user-definable limit. For any device. From any vendor.
Great articles here:
It’s absolutely unacceptable this isn’t a user-definable limit. For any device. From any vendor.
This is something Apple should have never let users do. Why? Because it’s one of those things that people erroneously believe helps them greatly when actual engineers know that it would only effect their battery exceedingly exceedingly negligibly over a very very long period of time.
Now, instead, people’s user experience drops massively in needing to charge far more frequently and depleting the battery to 0 far more, which is equally detrimental, maybe more.
Now, instead, people’s user experience drops massively in needing to charge far more frequently and depleting the battery to 0 far more, which is equally detrimental, maybe more.
Think that’s answered my question, thanks very muchYou can almost triple your charge/discharge cycles.
Great articles here:
It’s absolutely unacceptable this isn’t a user-definable limit. For any device. From any vendor.
Also have the 14 pro and it’s down to 90% with exclusively wired charging, if that helps
People who want this are families who have a long line of hand-me-down transfers when they get a new phone.
Batteries have a "storage voltage" they prefer to be at. Higher and lower charges will affect the longevity of the battery.
And "battery percent" isn't really something you can directly measure. Batteries put out voltage; that voltage drops when the battery loses charge. But it isn't linear, or even one-directional. If you pull a lot of amps out of a battery, the voltage will sag and go down--and go back up again when the load goes back to idle.
You can measure that voltage, amperage load when discharging, and cell resistance when charging. The "percent" shown is a total guess. And existing software is already deciding that cutoff--iPhones (and other devices) could try to run longer on lower battery voltages, but simply don't because it'll seriously harm the battery.
So yeah, I'd rather Apple have a buried toggle I can turn on so my girlfriend's kid has a better battery by the time this phone reaches him, than lower a hidden charge threshold globally without any option at all? I don't get the displeasure in some of these replies.
Batteries have a "storage voltage" they prefer to be at. Higher and lower charges will affect the longevity of the battery.
And "battery percent" isn't really something you can directly measure. Batteries put out voltage; that voltage drops when the battery loses charge. But it isn't linear, or even one-directional. If you pull a lot of amps out of a battery, the voltage will sag and go down--and go back up again when the load goes back to idle.
You can measure that voltage, amperage load when discharging, and cell resistance when charging. The "percent" shown is a total guess. And existing software is already deciding that cutoff--iPhones (and other devices) could try to run longer on lower battery voltages, but simply don't because it'll seriously harm the battery.
So yeah, I'd rather Apple have a buried toggle I can turn on so my girlfriend's kid has a better battery by the time this phone reaches him, than lower a hidden charge threshold globally without any option at all? I don't get the displeasure in some of these replies.
I am on 28% (at bed time of 11pm) after taking my phone off charge at 6am (iPhone XS Max 86% battery health). If my battery health was 100% I’d be going to bed with approximately 42% battery left. I’d happily make that 22%/7% right now to have that extra 14% on days when I needed it.
Absolutely. Soooo many iPads are used as always-on kiosks. And I've seen some get...a bit bloated as their batteries go spicy.
An 80% limit would be such a great feature for these use-cases.
Id love to use this but my anxiety does not let me leave the house without the battery being at 100%.
Also can someone explain to me how 80% is better than 100% for the battery? I thought the amount of full charges is what kills it? So if you charge it 30% then another 20% then 50% = full charge. I also thought it stops charging once it hits 100%?
Also can someone explain to me how 80% is better than 100% for the battery? I thought the amount of full charges is what kills it? So if you charge it 30% then another 20% then 50% = full charge. I also thought it stops charging once it hits 100%?
Why the extreme hate towards the setting? I don’t think I’ve ever used up the battery in one day so don’t need max capacity so why strain the battery? Rather 80% capacity for 5 years than 100% for 4.
I keep my 14 Pro on a charging stand at work all day and on my desktop so I’m killing it. This feature would be perfect.
This setting is mainly for people who use wired CarPlay and spend hours in the car with their iPhone needlessly being fully charged. The optimised setting was never able to predict random long journey in cars on random days of week which is why they’ve added this option.
What an absolutely ridiculous thing to software-lock to the 15 family
I think the reasoning is that most people, in an average day don't use anywhere near 80% of their battery. I know on my iPhone 13 Pro Max, I usually get down to maybe 40% by the end of the day. So charging all the way to 100% vs 80% will not impact my usage on a normal day. But if I am always charging to 100%, my battery degrades faster and then 3 years from now when I want to travel and need 100% of my battery, my battery doesn't last as long as it would if I'd capped charging to 80% on normal use days.
It's an option, so if what I described above doesn't make sense to you, just don't use that option.
Why it is only coming to the iPhone 15, when they clearly have the ability to do this for ALL iPhones is a whole other issue. Hopefully this is maybe just a user test before they roll out the option to everyone.
Going above 80% or below 20% is what stresses the battery the most. Charging between those points is no problem. Charge as much as you like and as often you like, but stay out of the top and bottom 20%
Or will the 80% setting show as 100% on the battery icon to give you the feeling that its fully charged even though it’s only at 80%? Hmm
I mean, it probably is being handled at the battery controller hardware level to avoid the (admittedly very very small) inefficiency of iOS having to check on the battery level every few seconds if on the charger.
I only keep the phone 2 years max and sometimes upgrade yearly so I ain’t really bothered about battery health
I bought a wireless charger (Belkin) for my 13PM and since using it my battery has plummeted from 95% down to 85%.
I assume the combination of heat and optimised charging not seeming to work on wireless charge has destroyed it. Suffice to say, no more wireless charging for my 15PM unless I have no other options available.
The portless iPhone is the stuff of nightmares.
There is absolutely no valid technical reason why this isn't available on other iPhones. The only reason I can think is that apple believes the capacity is such that even charging to 80% with these models provides more runtime than most other/older iPhones.
But also, it is true that other iPhones... when they say they are charged to 100%, this isn't strictly true.. the battery management dynamically changes what 100% is with usage and age of the battery.
It's all software/algorithms.
But also, it is true that other iPhones... when they say they are charged to 100%, this isn't strictly true.. the battery management dynamically changes what 100% is with usage and age of the battery.
It's all software/algorithms.
How often do you update your phone?
I update annually (and turn it in, I don’t pass it down), so the fact that my iPhone’s battery health is currently down to 89% makes no difference to me, because I’m not trying to prolong battery life to extend the life of my phone.
This is a great idea for people who keep their phones more than a couple of years.
I mean this is what Tesla does with their EV batteries.
Li-ion batteries do not like being charged past 80% nor being depleted below 30%