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BuggyGT

macrumors regular
Original poster
Oct 1, 2019
165
148
Tested on the Apple 87W and 30W USB-C Power Adapter, when the battery is below 50% it charges at around 29 watts and was able to hit about 30.44W on my generic RavPower USB-C adapter. Not sure why Apple only advertises the 20W on the iPhone page but I will stick with the 30w for the slightly quicker charging times. (*Edited to add that I been using the 30W Apple adapter on my 12 Pro Max which can charge at a maximum of 25W for the past year and it is at 97% Battery Health.)

60% Battery - charges at 25W
70% Battery - charges at 17W
80% Battery - charges at 10W
90% Battery - goes below 10W and slowly tapers down

IMG_8641 (1).jpg
 
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now i see it

macrumors G4
Jan 2, 2002
10,533
21,923
The more current that goes into the phone when charging, the hotter the battery gets. Not an issue in cool climates, but definitely can become an issue during the summer in a non air conditioned room.

I’d stick with Apple’s recommendations
 

ericwn

macrumors G4
Apr 24, 2016
11,784
10,318
Thanks for sharing! I’m charging with a third party 30W charger often and it works really well on my older iOS devices too.
 

rainafterthesun

macrumors 6502a
Jun 23, 2010
859
1,103
I live in a climate where it’s cold 360/365 days and actually was thinking of using a 30W at my office where it’s always cold…
 

michial

macrumors 6502a
Sep 15, 2009
769
424
Would this damage the phone’s battery. I just picked up the 20W Apple one and plugged it in before bed last night. I touched it after 5-10 minutes and the phone was very warm to hot. I’m wondering if it’s better to just use the 5W overnight and the 20 for quick charge scenarios.
 

BuggyGT

macrumors regular
Original poster
Oct 1, 2019
165
148
Would this damage the phone’s battery. I just picked up the 20W Apple one and plugged it in before bed last night. I touched it after 5-10 minutes and the phone was very warm to hot. I’m wondering if it’s better to just use the 5W overnight and the 20 for quick charge scenarios.
The iPhone handles the charging so when it gets to 99% battery, it only pulls maybe 1W or less and this has been the case on iPhones for years. Below 50% battery life, yes while it is charging at 20+W it does get hotter than normal but so did my 12 Pro Max.
 

kp98077

macrumors 601
Oct 26, 2010
4,110
2,605
Is it safe to charge the 13 PM with a 30w charger? just want to make sure, don't want to weaken the battery. Hope its ok because that's all have, thanks to apple not including chargers lol!
 

michial

macrumors 6502a
Sep 15, 2009
769
424
The iPhone handles the charging so when it gets to 99% battery, it only pulls maybe 1W or less and this has been the case on iPhones for years. Below 50% battery life, yes while it is charging at 20+W it does get hotter than normal but so did my 12 Pro Max.
I assume it won’t deteriorate the battery more quickly than using the 5W. I typically charge overnight.
 

BuggyGT

macrumors regular
Original poster
Oct 1, 2019
165
148
Is it safe to charge the 13 PM with a 30w charger? just want to make sure, don't want to weaken the battery. Hope its ok because that's all have, thanks to apple not including chargers lol!
For me all I can say is that I used the 30W charger for almost a year on my 12 Pro Max and it is at 97% battery health. My 11 Pro Max I used an 18W charger for a year and it was at 94% battery health.

And also there is a thread here where the battery health after a year for 12PM varies wildly for many different people so honestly I am not sure I can give you a straight answer, but I personally will continue to charge with the 30W.

 

haruhiko

macrumors 604
Sep 29, 2009
6,529
5,873
Is it safe to charge the 13 PM with a 30w charger? just want to make sure, don't want to weaken the battery. Hope its ok because that's all have, thanks to apple not including chargers lol!
It’s going to be safer than Qi/MagSafe which heats up the phone quite noticeably.
 

michial

macrumors 6502a
Sep 15, 2009
769
424
Faster charging speeds will undoubtedly shorten the life of the battery faster. I’m an electronic and electrical engineer.

I wish Apple would bring out an option to force slow charging.but
Faster charging speeds will undoubtedly shorten the life of the battery faster. I’m an electronic and electrical engineer.

I wish Apple would bring out an option to force slow charging.
Not doubting your qualifications at all. I had my 11 pro on Apples 18 W fast charger every night overnight and for 30 minutes around dinner. After 2 years of this daily routine my battery is at 100%. I doubt the difference between their 18 and 20w isn’t significant. The charge times in tests are pretty much equal.
 

827538

Cancelled
Jul 3, 2013
2,322
2,833
I find it almost impossible to believe that two years of I'm assuming daily use your battery health didn't fall a single percent. This doesn't fit with how li-ion cells function, even if you didn't use the battery it should show signs of aging.

18W vs 20W will be pretty insignificant in terms of long term battery health. But 5W vs 20W should produce a noticeable difference after two years of use.

Like I say to everyone, you want to keep the battery as close to 50% as possible and charge as slow as possible for optimal health. Obviously this is not practical. Most of the damage is done <10% and above 90%.
 
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michial

macrumors 6502a
Sep 15, 2009
769
424
I have no motive to lie about a stupid phone battery. Quite rude to insinuate I did, and I guess the impossible can happen. It is in fact at 100%. My phone is in a box shipped bacl to TMobile as a trade in. Otherwise I would gladly take a screen shot to show you.
 

michial

macrumors 6502a
Sep 15, 2009
769
424
I find it almost impossible to believe that two years of I'm assuming daily use your battery health didn't fall a single percent. This doesn't fit with how li-ion cells function, even if you didn't use the battery it should show signs of aging.

18W vs 20W will be pretty insignificant in terms of long term battery health. But 5W vs 20W should produce a noticeable difference after two years of use.

Like I say to everyone, you want to keep the battery as close to 50% as possible and charge as slow as possible for optimal health. Obviously this is not practical. Most of the damage is done <10% and above 90%.
I have no motive to lie about a stupid phone battery. Quite rude to insinuate I did, and I guess the impossible can happen. It is in fact at 100%. My phone is in a box shipped bacl to TMobile as a trade in. Otherwise I would gladly take a screen shot to show you.
 

ozziegn

macrumors 65816
Aug 16, 2007
1,294
830
Central FL Area
I'll never understand the obsession(s) with people wanting to charge their phones at the fastest and highest rate as possible. Anyone that knows 2 ounces or more of tech should know the faster you charge a battery two things happen: 1) More heat. well duh!!!!! and 2) You are most definitely putting more wear on that battery by pushing more current in it.

I have no idea why some people are or would be okay with doing the above mentioned but I guess that's why some people care about making sure their batteries have a long life and some don't. I damn sure know I want my iPhone batteries to live as long as they can. Shoving the most current through them on a daily basis isn't going to do that.
 

adam1080

macrumors 6502a
Mar 29, 2012
553
892
I sincerely don't understand why people are so anal about battery health and charging style.


Battery replacements are free under AppleCare and AppleCare+, AND AT THE MOST $69 at Apple.

You all are spending hours a week deciding how (and manipulating your habits) to charge your phone. How much time a year are you wasting on this????

If you spend more than 10 hours A YEAR on this, you are wasting your time even if you make minimum wage. Charge the ever-loving ? out of your phone. Buy/get a new battery every year and be done with it.


Can we please put an end to all these conversations??
 
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spiderman0616

macrumors 603
Aug 1, 2010
5,642
7,421
I sincerely don't understand why people are so anal about battery health and charging style.


Battery replacements are free under AppleCare and AppleCare+, AND AT THE MOST $69 at Apple.

You all are spending hours a week deciding how (and manipulating your habits) to charge your phone. How much time a year are you wasting on this????

If you spend more than 10 hours A YEAR on this, you are wasting your time even if you make minimum wage. Can we please put an end to all these conversations??
Haha--yeah--it is a little odd, right? If you're bothering to post on a forum like this, you're probably not the kind of person who keeps an iPhone long enough for any of this to even matter.

I think this year you can all officially add "battery degradation" to the list of things you no longer have to worry about. These phones don't drain very quickly, so if you want to leave it off the charger for the night sometimes when it hasn't been used much that day, it won't usually be too much of a problem, and an emergency fast charge here and there isn't going to make a noticeable difference on overall battery life.

I will tell you all, I quite knowingly hammered the crap out of my 12 Pro Max battery for the entire year I used it. Already at 100% but need to use it plugged in to the car all day because of CarPlay? Sure! Barely picked the thing up all day and had 80-90% battery when I went to bed? Whatever--I'll top it off for tomorrow just in case. I can probably count on one hand how many times it ever warned me of a low battery. Just to rub salt in the wound--I rarely ever did any of this with a cabled charger. It was almost always on a Mophie Qi "fast" charger so it was being juiced up AND using power at the same time all night every night.

After all the unadvisable charging habits and battery abuse, my battery health was still at 90% after a year. Yes, anecdotal. But my wife's 12 Pro Max, which has probably an even more "abused" battery than mine, is currently at 89%. I just simply don't worry about these batteries anymore. They're tanks.
 
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adam1080

macrumors 6502a
Mar 29, 2012
553
892
I agree. We should never talk about this subject ever again on this forum. Anything to make you happy..... :rolleyes:
Glad we have an understanding...

Unless you just get pure enjoyment out of choosing how to charge your phone and keeping that battery health percentage the highest it can be despite the actual personal cost, give me a valid point to this conversation?

People have their passions, we all do things we enjoy that are sunk costs. I'm saying battery charging routines and fetishes are not worth the actual time spent worrying or ultimately; not using the quickest, most convenient charging method for each individual.

To each their own... but if you spend any extra time in a day to "slow-charge" your battery on your phone(or worry about it at all) you are wasting your own money. That is all.

If we are talking dollars and cents, pounds and pence... fast charge your batteries, buy/get a free one each year and get back hours of your life to enjoy something else instead of waiting for your phone to charge or carrying around a battery pack or finding an electrical outlet.
 
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now i see it

macrumors G4
Jan 2, 2002
10,533
21,923
For some of us, a battery replacement is a big deal. AKA not an option.

1. Own only one iPhone and no land line phone
2. Don’t have Wi-Fi internet
3. Don’t live anywhere near an Apple Store so phone will have to be mailed in to be repaired- that could amount to a week or more with no phone/ no internet.

For some people, a battery replacement is not an option. The battery HAS to outlive the useful life of the phone (6-7) years.
THATS why some of us are obsessed over battery care
 

Hey Now

macrumors regular
Apr 7, 2010
175
392
Glad we have an understanding...

Unless you just get pure enjoyment out of choosing how to charge your phone and keeping that battery health percentage the highest it can be despite the actual personal cost, give me a valid point to this conversation?

People have their passions, we all do things we enjoy that are sunk costs. I'm saying battery charging routines and fetishes are not worth the actual time spent worrying or ultimately; not using the quickest, most convenient charging method for each individual.

To each their own... but if you spend any extra time in a day to "slow-charge" your battery on your phone(or worry about it at all) you are wasting your own money. That is all.

If we are talking dollars and cents, pounds and pence... fast charge your batteries, buy/get a free one each year and get back hours of your life to enjoy something else instead of waiting for your phone to charge or carrying around a battery pack or finding an electrical outlet.

You think it’s a waste of time and money to use a slow charger. But you don’t think it’s a waste of time or money to:
1. Schedule a service appointment
2. Drive to the store
3. Wait around for them to replace your battery
4. Pay for this service (or get it “free“… by *paying* for applecare, an extended warranty you pay for even if you never use it)
5. Drive back home
6. Have a phone that’s been cracked open by a counter jockey (potentially decreasing water resistance)
 

adam1080

macrumors 6502a
Mar 29, 2012
553
892
For some of us, a battery replacement is a big deal. AKA not an option.

1. Own only one iPhone and no land line phone
2. Don’t have Wi-Fi internet
3. Don’t live anywhere near an Apple Store so phone will have to be mailed in to be repaired- that could amount to a week or more with no phone/ no internet.

For some people, a battery replacement is not an option. The battery HAS to outlive the useful life of the phone (6-7) years.
THATS why some of us are obsessed over battery care
No Apple Store is valid.

It only takes 30-60 minutes to change a battery at an Apple Store(just did it for the 7th time in my life last week), which anyone in those first 2 circumstances near an Apple Store can surely live 30-60 minutes without a phone for a scheduled appt.

I know there are 3rd party options to replace a battery that are comparable price and duration.

So, unless folks live in a super rural area with no 3rd party possibility of battery replacement, no transportation, a real reason they can't live without internet access for an hour; we are back to where we started.

I am certainly not talking about anywhere outside of mostly developed nations. I've lived in places where anything electronic(even electricity) was a luxury. But since we are talking about a $1300 phone here... If you can afford to get your hands on one of these things on release day, these are some reasonable expectations.
 
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