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I’m old school. I prefer a classic 5W Apple Charger. Slow charging (overnight) is the best 🔋
It’s actually healthy for the phone battery too. These fast charging tends to put a lot of ware on the battery. I use to use my iPad charger to charge my 6s and I think that’s why it barely last a few hours these days.
 
The regular 15 series seems like a more sizeable improvement than the 14 series was, if compared to the predecessor.
 
Welcome to 2018 Apple!

OnePlus' latest phone ships with a 100W SuperVOOC power brick
yeah, and the realme GT3 240W charges in 9,5 minutes lol. It's insane. Tried it and the battery health holds out too, but, it leaves one wondering why the likes of Apple haven't gone this direction?
 
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If you're the type of person who likes to take care of your gear, it's very likely possible to extend the lifetime of the battery significantly by avoiding fast charging (heat) and by cycling the battery between 20 and 80% most of the time.
Unfortunately that's not the case.
I've tried this with my latest MacBook Pro. Charging it just with 60W power supply, never used fastest magsafe, always keeping the battery on 80% (which is supposed to be the golden value), yet my battery health is below the average (according to the coconut battery statistics).

So no, I would say when you real-world test these claims, you'll find out that the actual negative impact of fast charging is very minor.

I'm not talking about extremes present on other manufacturer's - like 100W charging on a phone - that's obviously extreme and will probably have some actual negative impact. But ~30W charging speed on the iPhone is really not something that would visible impact your battery health on the iPhone.

Also see this post https://forums.macrumors.com/thread...5w.2398935/page-2?post=32389694#post-32389694 which explains it quite nicely.
 
Letting users manually set when the battery needs to be full would be ideal. iOS simply looking at what an alarm is set to would work as well. If I usually need my phone by 8am but I have an alarm set for 6am one day, making sure the phone is ready to go by 6 seems like a a no brainer for most such situations.
I got it to be done around 4-5 am over time by getting phone between 7 to 7:30. But my AW Ultra which I have had since spring does not seem to want to learn from this same thing. Sometimes it will charge at night right away but next day it still is maxed out at 80 percent at 7 AM when I want so I then have to fast charge it so I can have 100 percent for the day I am usually around 70 percent plus after day but if I leave at 80 percent the way it’s optimized charging workers then I will have under 50 percent so I have to do an every other day charging and it never seems to learn. Maybe the optimizing AI has more smarts/instructions or such on iPhone 14 ProMax?
 
You are quite wrong here.
Magsafe efficiency is not higher than 75%
(source: https://discussions.apple.com/thread/252145374?answerId=254077476022#254077476022 )
This is not something that manufacturer have to release, you can quite easily verify this yourself through measurement of input power VS battery capacity (which you can get pretty reliably through coconut battery for instance).

Non-magsafe wireless charging efficiency is around 50% for comparison.

Your 90% numbers are from the another planet and impossible to reach.
if you want to believe some random post on the internet, that's fine ...
efficiency overall is a far more complex thing that that post is citing ...
 
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perhaps if they make the battery bigger, you don't have to charge fast.
because phones will last until the end of day, in which you will be back at your home to allow slow charging
 
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yeah, and the realme GT3 240W charges in 9,5 minutes lol. It's insane. Tried it and the battery health holds out too, but, it leaves one wondering why the likes of Apple haven't gone this direction?
They can't add all available technology now; it goes against their business model. They'll slowly add each one bit by bit so they can increase the price by $100 for every little thing they update. 😇
 
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Charging it just with 60W power supply, never used fastest magsafe, always keeping the battery on 80% (which is supposed to be the golden value)
80% is still a high charge level. I would not keep the MacBook at this level (constantly) for a very long time. The advice is to cycle between 20% and 80% most of the time.

So no, I would say when you real-world test these claims, you'll find out that the actual negative impact of fast charging is very minor.
The impact is minor in the short term, but it will compound after years of fast charging. The following video by Great Scott on YouTube shows the impact of 5 Ampere fast charging with a current Samsung battery that is probably comparable to what is used in iPhones. Apple is hopefully using a clever charging protocol that takes the battery temperature into account though.

But ~30W charging speed on the iPhone is really not something that would visible impact your battery health on the iPhone.
Fast charging per se is not that problematic. What's bad is if your battery heats up significantly above 25° C (~80° F) while fast charging. That's when the detrimental chemical reactions inside the battery really get going.
 
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I have no issue with the speed my 14P charges on the standard apple 30w charger, I think it’s extremely fast actually.

However my battery health is at 88% already and I almost exclusively wirelessly charge. Definitely ready to upgrade to the 15p based off how bad this battery has been.
Hmmmm… My 12P is only at 85% and I mostly use MagSafe and only fast charge via Lightning when needed… 🤔
 
I've been charging the last several generations of my iPhones on the highest available chargers I can (usually USB C ports that do 30+ watts of power). My iPhone 13 Pro Max, from 10-06-21 to 01-30-23 had 102.7% health or 4470 mAh of capacity after 185 cycles.

I'm a light user and my phone spends most of its time between 70-100%. So despite being plugged into a high wattage charger, my phone sips watts often in the single digits - I plug it in whenever I want (never overnight).


Wireless charging had instances where despite being at 100% charge, the phone would be baking oven hot for no reason so I don't use wireless charging (and MagSafe is far better than most wireless charging I've used).

I highly recommend this book if someone wants to learn more about batteries ( as well as this website ) : https://batteryuniversity.com/buy-the-book https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries

Most batteries will lose their capacity and settle on a % after several years of usage. That's why some see older phones stuck at a %. I saw a 4s with several thousand cycles at 80 something%. The first few years of usage have the highest % drops and then it tapers off and settles. The Battery % health has caused a lot of stress - these forums are full of posts about this. Apple suggests that batteries should last to 80% health after 500 cycles. Even if one doesn't use their battery at all - health will drop especially if stored at a high state of charge.

Other phone manufacturers offer extremely high rates of charge - this can be done safely and has been done for years now.

The 14 series iPhone has been far more sensitive to holding off charging when the phone gets hot, unlike previous iPhones. Also the 14 series seems to have the ability to run off the mains while charging - reducing cycles and battery stress (my own observations) (previous phones would funnel all power through the battery regardless of being plugged in or not).

I did try using the 5w brick for a little while but that thing got so hot it yellowed trying to charge my iPhone 13 Pro Max. I was not comfortable using this to power my iPhone. My experience and preference is charging the phone in the range of 100-70% as it provides a slow enough rate of charge and very little heat stress on the battery.
 
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80% is still a high charge level. I would not keep the MacBook at this level (constantly) for a very long time. The advice is to cycle between 20% and 80% most of the time.
Sorry, bad wording. I meant my charging limit is kept at 80%, so I rarely charge to full 100%. I'm mostly using my Macbook connected to the external docking station, however that does not mean it's permanently at 80% without discharging it once a while. Anyway what I meant is - I'm actively maintaining my battery and still got worse results than average Macbook user (and I believe majority does not take active care of their battery).

The impact is minor in the short term, but it will compound after years of fast charging. The following video by Great Scott on YouTube shows the impact of 5 Ampere fast charging with a current Samsung battery that is probably comparable to what is used in iPhones.
I was waiting if someone finally refers to this video.
Firstly his test is not scientific by any means - check his graphs carefully. In 1A charge the "after" gauge is higher than the "before". Which just does not make any sense. 100 cycles just does not make your battery capacity higher.

Secondly he missed the comparison of slow charge degradation vs fast charge degradation. Why? Because of my first point - he simply could not make such comparison, because his slow charge measurement gave absurd results.

Thirdly even with slow charge you see degradation (obviously) and the difference between slow and fast charge just is not that high over the years. He saw some drop on the fast charge, because the curve is not linear. It degrades rather fast in the first tens of cycles then the degradation slows down. Also it's not worth actively caring about your battery just to maybe get 10% of more battery life after 3+ years of usage. Many users already changing their phones after such period.

Fast charging per se is not that problematic. What's bad is if your battery heats up significantly above 25° C (~80° F) while fast charging. That's when the detrimental chemical reactions inside the battery really get going.
That's totally true. What is even worse with regard to battery heat-up, is wireless charging. And many people fail to understand this.
 
I was waiting if someone finally refers to this video.
I agree that it's hard to draw definitive conclusions from this experiment after 100 cycles and such a small sample. But if I read the comments correctly, the experiment is going to be continued beyond 100 cycles. We will see if another video will be released in the near future.
 
I agree that it's hard to draw definitive conclusions from this experiment after 100 cycles and such a small sample. But if I read the comments correctly, the experiment is going to be continued beyond 100 cycles. We will see if another video will be released in the near future.
That would be good. But still I'm not sure whether his extended test will be plausible to me if there's clearly some error in the measurement from the beginning - as stated before. It does not make sense that your battery would magically grow capacity from 100 cycles.

Yes, 1 cycle may potentially "refresh" the capacity a little bit. But all batteries got increased capacity after 100 cycles? That's really an error in the measurement. And such obvious untreated error bothers me, because I really like GreatScott channel.
 
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Yep a variable schedule is a pain with the optimized AI thing it just gets confused. It works if you get up around same time all days but it does not figure out after a week or so such a variable schedule it seems set only for 24 hour learning of your schedule assuming most days the same
But setting an alarm should be a pretty good indication of my schedule for that day. This is why I'm not too worried about a robot uprising, they could learn our habits, but if we just make them random, but schedule our attacks on a calendar, they would be caught by total surprise.
 
As long as I can use USB C, I don't care if the max speed is 1 watt.
Typical Appleboys. Shut up and take my 💰. If we continue to go down this path, it will be our fault for having slow and less stellar of everything while price tag continue to skyrocket.
 
Definitely not for charging. For other peripherals? Sure.

And also EU will choose some more open standard than Apple locked one for sure.

Edit: reaction to your edited message: there's not attack vector for charging. Charging cable is dumb and should not use data pins. So EU Cyber Resilience Act is not relevant for this case. It is however relevant for peripherals which actually use some driver (HID devices, mass storage devices etc.)
 
Hmm all these debates about fast charging and 20 or 30 W being bad for the battery…. I’m laughing.

The phone CAN regulate the curve and thus power depending of the battery level or temperature.

So basically the 30w charge is only when battery is very low and on my 13 pro max can last about 15 mins only, then the power reduce due to temperature and battery level, so it reduces to 15 then 8W and once reached 80% sleep until 2 hours before wake up and there charge at 5 or 2 W.

So 30W charger doesn’t mean 30W all along the charge time…

What I’m curious is how the concurrent are managing 100W charge for more than 1-2 mins without an active battery cooling
The charging curve isn't optimized for maximum battery health. Apple optimized the curve so battery capacity doesn't fall below 80% within two years (AppleCare+). But that doesn't mean it's good.

The steepest part of the charging curve is the first 30-40 minutes. You really don't want 27W being pumped for that long if you care about health.
The charge rate steps are at percentages:

Apple said:

It charges fast for convenience and slow for longevity.​

Your Apple lithium-ion battery uses fast charging to quickly reach 80% of its capacity, then switches to slower trickle charging. The amount of time it takes to reach that first 80% will vary depending on your settings and which device you’re charging. Software may limit charging above 80% when the recommended battery temperatures are exceeded. This combined process not only lets you get out and about sooner, it also extends the lifespan of your battery.

In regard to fast charging, Apple has apparently tried to keep marketing at:
Apple said:
You can recharge your iPhone up to 50 percent battery in around 30 minutes.

Nevertheless, when fast charging was first available, several publications did tests, for example:



In my observations, there is a slow decrease in rate after 50% charged but the true trickle charge moment begins at 90%.
 
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