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iPad iPad gets hot charging at 65W, not 20W

W

WallySpoons

macrumors newbie
Original poster
Oct 29, 2017
15
7
Hi all

iPad M2 12.9"...

It gets really hot when charging on a 65W charger (non-Apple [UGreen] but it does have USB-PD according to the description) but using a normal Apple 20W charger it seems to be OK (though takes longer to charge). The UGreen charger charges my MacBook fine without excessive heat.

Is this normal?

I guess the test would be to try charging it with an Apple 65W charger but I've not tried that yet.

Cheers

Chris.
 
I’m charging with a Mophie 87W charger but doesn’t feel it is hot while charging. So something must be different when controlling how the charging goes for your UGreen charger. Granted my iPad is only 11” but I think the result is not bad for me. My iPad can accept roughly 45W at maximum during recharging.
 
I’d certainly expect it to be warmer with a faster charge rate. That iPad is almost all battery, so doesn’t surprise me that the heat can be felt.

Case (and case design) vs. no case would affect it too, as would the physical environment where it’s charging.
 
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If you charge with a 35W charger and the battery is between 20% and 50% it will charge at about max until it reaches about 80% capacity. It might get warm, certainly if you are also working on it and have brightness at full capacity.
Test it with the Apple 65W one, if it keeps getting warm to the touch, don’t worry.
If you can’t touch/hold it anymore, worry :-D
 
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Is it getting hot or just warm ? Warm at high charging rate is quite normal… hot is a different matter (and i would stop using that charger immediately )
 
Cheers all. I shall experiment with the Apple 65W charger and see...
Will post results back here ready for peer review!
 
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Yups. And if you want a good charger, that is smaller and better priced, let me recommend a 30 watt GaN from anker. Charges your iPad at maximum speeds, is seriously smaller and cheaper.
But if you have an Apple 65W laying around, that is even cheaper 🙃
 
alecgold said:
Yups. And if you want a good charger, that is smaller and better priced, let me recommend a 30 watt GaN from anker. Charges your iPad at maximum speeds, is seriously smaller and cheaper.
But if you have an Apple 65W laying around, that is even cheaper 🙃
Click to expand...
Agree. Anker is good quality but lower price
 
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WallySpoons said:
Cheers all. I shall experiment with the Apple 65W charger and see...
Will post results back here ready for peer review!
Click to expand...

Apple charger won't make a difference. The M2 iPad can charge with a max. of ~35W (only in the 0% to ~60% range) so yeah that's gonna be warmer than charging with 20W.
If you don't mind the extra time: charging slower = less heat = less wear on the battery.
 
Last edited:
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valynor said:
Apple charger won't make a difference. The M2 iPad can charge with a max. of ~35W (only in the 0% to ~60% range) so yeah that's gonna be warmer than charging with 20W.
If you don't mind the extra time: charging slower = less heat = less wear on the battery.
Click to expand...
But he said hot, not just warmer
 
I charge my 12.9 iPad Pro with same Mag safe 140W MBP charger, never run in to heat issues.
 
valynor said:
Apple charger won't make a difference. The M2 iPad can charge with a max. of ~35W (only in the 0% to ~60% range) so yeah that's gonna be warmer than charging with 20W.
If you don't mind the extra time: charging slower = less heat = less wear on the battery.
Click to expand...
It takes lot more than to wear battery for degradation. I use the same 140W charger and cable i use with my 16 inch MBP, never had heat issues.

OP try a different charger, I also use a Anker 65 W car charger for my Mac and iPad Pro on long drives.
 
valynor said:
Heat is the enemy of Lithium batteries. They don't fall apart immediately but they age faster.
I suggest you do some research.
Click to expand...
Heat tolerance specification is the key, I have done plenty of research and have used devices long enough to notice it doesn’t really make a difference. I take my 13 PM iphone to steam and sauna multiple times a week, my battery is more healthier than folks who baby sit batteries worrying about heat. Paranoia isn’t good for mental health. There are too many factors effecting battery life, and variation in lithium batteries by manufacturer is large.
 
I invite everyone to google for "heat and lithium batteries" themselves.
Taking your phone to a sauna is probably one of the more stupid things you can do.
 
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Lol. I don’t need to Google or do other stupid online things. I have used my device, and excellent battery health says it all. Stop the paranoia and live life. My iPhone after 3 years is in great health and lasts as much as it did when I bought it.

Each battery and device comes with its own specifications, some tolerate heat better and others don’t. Not every lithium battery is same.
 
valynor said:
People perceive temperature very differently. For some 40°C is warm, another person will call that hot.
An iPad should not get any warmer than 40-45°C while charging or it will throttle charging or even turn the charging off completely until it cools down.
Click to expand...
That was my first question: is it warm or hot ? That’s a lot different
. If it is hot, something is wrong with the charger or the iPad
 
TechnoMonk said:
Lol. I don’t need to Google or do other stupid online things. I have used my device, and excellent battery health says it all. Stop the paranoia and live life. My iPhone after 3 years is in great health and lasts as much as it did when I bought it.

Each battery and device comes with its own specifications, some tolerate heat better and others don’t. Not every lithium battery is same.
Click to expand...
Actually you are wrong. Chemically every lithium battery is exactly the same, and after 3 years it is simply IMPOSSIBLE for your iPhone to lasts as much as new
It’s not being paranoid. It’s being informed
 
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So charging with an Apple 65W charger... (I had one lying about from my MacBook). The iPad is warm but not hot. It was definitely warmer approaching hot with the UGreen charger (not sure there is an internationally approved thermocline between 'warm' and 'hot'). So I'm gonna stick with the Apple one which is a bit bigger and bulkier to carry about but seems overall a better bet.

Hard to tell for sure!
 
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WallySpoons said:
So charging with an Apple 65W charger... (I had one lying about from my MacBook). The iPad is warm but not hot. It was definitely warmer approaching hot with the UGreen charger (not sure there is an internationally approved thermocline between 'warm' and 'hot'). So I'm gonna stick with the Apple one which is a bit bigger and bulkier to carry about but seems overall a better bet.

Hard to tell for sure!
Click to expand...
Well, if you can tell the difference between the two chargers, something is wrong with the UGreen for sure.
I don’t know UGreen as a quality brand for chargers, to be honest. I’m usually buying Anker or Belkin
 
WallySpoons said:
So charging with an Apple 65W charger... (I had one lying about from my MacBook). The iPad is warm but not hot. It was definitely warmer approaching hot with the UGreen charger (not sure there is an internationally approved thermocline between 'warm' and 'hot'). So I'm gonna stick with the Apple one which is a bit bigger and bulkier to carry about but seems overall a better bet.

Hard to tell for sure!
Click to expand...
Thanks for the information. I’ve had similar experiences with high-wattage chargers—sometimes they get hot, while other times they’re just warm (I haven’t paid much attention to the difference between chargers; I use both Apple and Anker). However, most of the time, I charge my iPad overnight using a 5-watt charger.
 
WallySpoons said:
So charging with an Apple 65W charger... (I had one lying about from my MacBook). The iPad is warm but not hot. It was definitely warmer approaching hot with the UGreen charger
Click to expand...

Did you charge in the same % range, though? When your iPad is charged >60% the charging current tapers down and there will be less heat.
 
FlyingDutch said:
Actually you are wrong. Chemically every lithium battery is exactly the same, and after 3 years it is simply IMPOSSIBLE for your iPhone to lasts as much as new
It’s not being paranoid. It’s being informed
Click to expand...
Just look up battery specifications, they all tolerate differently. Same for silicon, some chips tolerate heat better. It’s not rocket science, you can’t generalize.
 
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