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iPad Pro iPad Pro 11-inch charges faster with 29W/30W adapter than 87W

Correct, because the 87w charger doesn’t support USB Power Delivery at 15V/2A (i.e. 30watts).
 
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profets said:
Yup, been some discussion on this since last year.

https://forums.macrumors.com/threads/87w-usb-c-charger-doesnt-charge-12-9-ipad-pro-29w.2015416/

Sounds like it's the same for the 2018 based on your testing.
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BeatCrazy said:
Correct, because the 87w charger doesn’t support USB Power Delivery at 15V/2A (i.e. 30watts).
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Apple needs to change the wording of their support documents because it gives the impression that all chargers above the one that comes with the iPad are equal when they're not. https://support.apple.com/en-ca/HT209186#charge
 
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BeatCrazy said:
Which part of that doc is incorrect? The 61w/81w MacBook chargers will still charge these new iPads faster than the old 10/12w style.
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It's not incorrect, but it's not very clear at all either. Someone with the 61W or 87W charger might think they're going to get a faster charge when in reality they're going to get 12W.

From the site:
If you have a higher-wattage USB-C power adapter — such as the one that came with your Mac notebook — you can use it with iPad Pro, and you might see faster charging. You can also charge iPad Pro by connecting it to the USB-C port on your computer.
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You might also see slower charging.
 
profets said:
It's not incorrect, but it's not very clear at all either. Someone with the 61W or 87W charger might think they're going to get a faster charge when in reality they're going to get 12W.

From the site:


You might also see slower charging.
Click to expand...

Well, there are several factors at play. If the iPad is at >50% charge, the max it will pull is about 10w regardless of which charger you’re using. Also, there are actually two different 61w USB-C chargers (A1947 and A1718). The A1947 will charge the new iPads at 30w (15v/2A) So, there are few caveats to be aware of.
 
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BeatCrazy said:
Well, there are several factors at play. If the iPad is at >50% charge, the max it will pull is about 10w regardless of which charger you’re using. Also, there are actually two different 61w USB-C chargers (A1947 and A1718). The A1947 will charge the new iPads at 30w (15v/2A) So, there are few caveats to be aware of.
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Not true. Just tried with my iPad at 60% and it pulled 30W
 
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DeanLubaki said:
Apple needs to change the wording of their support documents because it gives the impression that all chargers above the one that comes with the iPad are equal when they're not. https://support.apple.com/en-ca/HT209186#charge
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your link said:
To charge iPad Pro, connect the included USB-C cable to the device's USB-C port and to the included 18W power adapter. Then plug the adapter into a wall outlet.

If you have a higher-wattage USB-C power adapter — such as the one that came with your Mac notebook — you can use it with iPad Pro, and you might see faster charging.
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Apple doesn't promise greater than 18W charging, which is exactly what the new iPad Pros ship with. I'm not saying I agree with Apple, but they are not saying anything wrong. It's not even particularly misleading - they never mentioned 30W charging in that web page.
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DeanLubaki said:
Not true. Just tried with my iPad at 60% and it pulled 30W
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This chart may be useful, but admittedly for the previous generation of iPad Pros - https://forums.macrumors.com/threads/29w-fast-charging-tests-and-3rd-party-adapters.2052414/.

I could re-test everything again, but it's a little tedious.
 
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I’ve got a 30 watt charger for fast charging my iPhone X, so would you all reckon that when I get my new iPP that using the 30 watt charger for that and the 18 watt for the iPhone would make sense?
 
masotime said:
Apple doesn't promise greater than 18W charging, which is exactly what the new iPad Pros ship with. I'm not saying I agree with Apple, but they are not saying anything wrong. It's not even particularly misleading - they never mentioned 30W charging in that web page.
[doublepost=1541898493][/doublepost]

This chart may be useful, but admittedly for the previous generation of iPad Pros - https://forums.macrumors.com/threads/29w-fast-charging-tests-and-3rd-party-adapters.2052414/.

I could re-test everything again, but it's a little tedious.
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Just tried it at 77%, and it's charging around 14.3 v at 1.65 a which is 23.6 watts, so still well above 10 watts
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Applicationz said:
Anyone? 18w charging time?
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Sorry, I haven't even used the 18 W charger yet haha! Since I had a bunch of 29 W I just used them right away. I can test it when my battery is depleted
 
DeanLubaki said:
Just tried it at 77%, and it's charging around 14.3 v at 1.65 a which is 23.6 watts, so still well above 10 watts
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I can corroborate that it does appear to charge at faster rates even at higher percentages (I currently have the 12.9”)

It would seem the adopting the USB-C port has brought additional advantages. It would have been better if the iPad supported 20V charging though - then the 61W / 87W chargers should be able to deliver 30W charging as well (via 1.5A).
 
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Hi everyone, I would really appreciate a comparison between the 18w and 87w charger if anyone has the equipment to do so.
 
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