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TheRealAlex

macrumors 68030
Original poster
Sep 2, 2015
2,988
2,253
I have a 2018 11” iPad Pro with a standard charger that came in the box. But I have a Samsung Note 20 Ultra 5G

that’s a 18 Watt Apple charger ? Vs a 25 Watt Samsung charger on the Note 20 Ultra 5G

using the 25 Watt Samsung charger my 11” iPad Pro does get Warm.

Anyone know, what is the fastest possible charger to use on the iPad Pro that will work ?
 

MacBH928

macrumors G3
May 17, 2008
8,741
3,901
I have a 2018 11” iPad Pro with a standard charger that came in the box. But I have a Samsung Note 20 Ultra 5G

that’s a 18 Watt Apple charger ? Vs a 25 Watt Samsung charger on the Note 20 Ultra 5G

using the 25 Watt Samsung charger my 11” iPad Pro does get Warm.

Anyone know, what is the fastest possible charger to use on the iPad Pro that will work ?

I'd wait for someone who knows to answer, because I remember Apple used to ship a more powerful charger for the iPad and people were afraid to use it with their iPhones in case it might damage it. Apple later said it was safe to use the more powerful charger with the iphone. So better be care if using a 30-40-60W charger before knowing the facts.
 

Killbynumbers

macrumors 6502a
May 29, 2019
579
565
I occasionally plug the charger from my 16” 2019 MBP into my 2020 12.9” iPad Pro and it’s fine. The iPad will control input that it needs.
 
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doboy

macrumors 68040
Jul 6, 2007
3,777
2,958
I have a 2018 11” iPad Pro with a standard charger that came in the box. But I have a Samsung Note 20 Ultra 5G

that’s a 18 Watt Apple charger ? Vs a 25 Watt Samsung charger on the Note 20 Ultra 5G

using the 25 Watt Samsung charger my 11” iPad Pro does get Warm.

Anyone know, what is the fastest possible charger to use on the iPad Pro that will work ?
30W charger should provide max speed since that’s the max the iPad will accept. Anything more won’t make a difference.
 

TheIntruder

macrumors 68000
Jul 2, 2008
1,771
1,282
The '18 Pro has been tested to draw a peak of ~2.33A at 15V, ~35W, from the 61W MBP adapter.

So there's no need to go that high; the 30W adapter would be fine, as well as the 25W Samsung adapter already in hand.

Interestingly, it does not support the venerable Apple 2.4A protocol, so when connected to a typical non-PD adapter, it will max out at 7.25W. I've confirmed this myself with a '20 Pro.
 

doboy

macrumors 68040
Jul 6, 2007
3,777
2,958
The '18 Pro has been tested to draw a peak of ~2.33A at 15V, ~35W, from the 61W MBP adapter.

So there's no need to go that high; the 30W adapter would be fine, as well as the 25W Samsung adapter already in hand.

Interestingly, it does not support the venerable Apple 2.4A protocol, so when connected to a typical non-PD adapter, it will max out at 7.25W. I've confirmed this myself with a '20 Pro.
Seriously? Why wouldn’t it do 5V @ 2A for 10W?
 

TheIntruder

macrumors 68000
Jul 2, 2008
1,771
1,282
Seriously? Why wouldn’t it do 5V @ 2A for 10W?
I suspect that, being a device primarily intended for USB PD charging, with a USB 3.2 (fka 3.1) gen 2 interface, the components it employs only adhere to the USB-C (non-PD) and Multi-lane SS power standards, which are 7.5W, as secondary fall backs, and do not support Apple 2.4A/12W. There really little reason to, never mind making it any sort of priority.

It's odd though, to see that it will draw more power from my powered hub (7W), which is 3.0, than it will from my desktop charger (5W).

Creates a bit more urgency in my shopping for a PD desktop charger.
 
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