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iPad Pro 29W Fast charging tests and 3rd party adapters

masotime said:
This is interesting. You're right that 3rd party chargers may not work as well as Apple's own charger, but I'm wondering if the Pencil will work at all when you're charging an iPad Pro. Do you have the charger that shipped with your iPad Pro? I'd suggest testing with that first to see if it works. If it does, then I think getting the Apple charger is a good bet.

Otherwise, I've generally noticed that charging the iPad seems to sometimes interfere with even the capacitive touch - probably because both are electrical in nature. I can't confirm it, but those are my impressions.
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I'm using the Anker single-port fast charger and Apple cable with my 10.5" iPP and the pencil works fine while charging.
 
DoubleFlyaway said:
The pencil normally works fine while charging the iPP. I do it all the time while working.
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sparksd said:
I'm using the Anker single-port fast charger and Apple cable with my 10.5" iPP and the pencil works fine while charging.
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Thanks for the data points, that seems pretty clear - so it looks like the 3rd party charger used in that scenario is probably at fault then, but at the Anker one is fine. I guess that's the problem with USB-C PD - it may not be strict enough for some of the iPad's use cases.
 
masotime said:
Thanks for the data points, that seems pretty clear - so it looks like the 3rd party charger used in that scenario is probably at fault then, but at the Anker one is fine. I guess that's the problem with USB-C PD - it may not be strict enough for some of the iPad's use cases.
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Yeah, I use the Apple 29W or sometimes an Anker one (though one of my Anker ones stopped working after two months, but that’s an unrelated quality issue). Either one is totally fine— no interference with Apple Pencil.
 
masotime said:
Thanks for the data points, that seems pretty clear - so it looks like the 3rd party charger used in that scenario is probably at fault then, but at the Anker one is fine. I guess that's the problem with USB-C PD - it may not be strict enough for some of the iPad's use cases.
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I have tested with my Aukey PB-Y7 (USB PD powerbank), I have no issues with the Apple Pencil and it.
[doublepost=1523638701][/doublepost]Also, has anyone tested this charger?

https://www.amazon.com/AUKEY-Charge...rd_wg=dMdMx&psc=1&refRID=SETQ5N2SG36PYMEWFJGT
 
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masotime said:
Thanks for the data points, that seems pretty clear - so it looks like the 3rd party charger used in that scenario is probably at fault then, but at the Anker one is fine. I guess that's the problem with USB-C PD - it may not be strict enough for some of the iPad's use cases.
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Over on Reddit, this same issue was discussed and a couple of posters said properly grounding their chargers (i.e., 3-prong plugs in the connection) fixed the issue for them.
 
sparksd said:
Over on Reddit, this same issue was discussed and a couple of posters said properly grounding their chargers (i.e., 3-prong plugs in the connection) fixed the issue for them.
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Interesting. Do you have a link to the thread? What if the charger doesn't have 3 prongs, only 2? Most of the chargers I've seen so far, even Apple's own chargers, are 2-pronged.
 
sparksd said:
Over on Reddit, this same issue was discussed and a couple of posters said properly grounding their chargers (i.e., 3-prong plugs in the connection) fixed the issue for them.
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I have posted about doing such stuff before I think. Unfortunately, this does not work.

Getting a properly built charger (i.e. one that has the correct internal protection) is the only way to avoid such issues.
 
darkarn said:
About that charger causing my iPad to be less sensitive to touch: I did more checks and found out that my iPad was at fault too. I swapped for a new one and most of the touch issues were resolved.

The charger (currently just an Aukey wall charger) still give touch responses some delay but not to the point where it does not detect touches. My Aukey USB PD powerbank does not give this problem at all.
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Funny part is that when the Aukey wall charger is used with an USB hub and an USB Ethernet adapter, with Lightning to USB 3 adapter, there is no such touch issues either.

Perhaps somehow the power is clean enough to prevent such issues?
 
Truefan31 said:
Is this confirmed? I believe the ipad pros do fast charging at 14.5 @ 2amps, or at least 15 @ 2amps. Anyone confirm?
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I am curious about this, too, but the linked page doesen’t either say USB-C PD or list output specs.
[doublepost=1532105273][/doublepost]
mrmsquared said:
I have this, paired with the proper cable...it fast charges my 12.9” iPad Pro and my iPhone X
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Do you know if it is doing full, 29/30W fast charging of the iPP and 18W fast charging of the X? Thanks.
 
Peter K. said:
I am curious about this, too, but the linked page doesen’t either say USB-C PD or list output specs.
[doublepost=1532105273][/doublepost]
Do you know if it is doing full, 29/30W fast charging of the iPP and 18W fast charging of the X? Thanks.
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So it does support USB PD but not to the full extent of the spec (~100W). It caps out at 36W. It doesn’t charge iPad Pro as fast as the usb-C MacBook charger and a usb-c to lightning PD cable, but it is much faster than a standard usb charger. For iPhone X, full fast-charging support is provided...boy is it fast.
 
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mrmsquared said:
So it does support USB PD but not to the full extent of the spec (~100W). It caps out at 36W. It doesn’t charge iPad Pro as fast as the usb-C MacBook charger and a usb-c to lightning PD cable, but it is much faster than a standard usb charger. For iPhone X, full fast-charging support is provided...boy is it fast.
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Sorry if I missed it earlier in the thread, but which iPP do you have? If it is the 12.9”, is it 1G or 2G. Thanks.
 
I think it's a little weird that there basically isn't a car charger that will fast charge the ipp. It's been over two years since its introduction. There's plenty of wall chargers capable, but afaik very little car chargers.
 
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That’s due to Apples super stringent and eccentric requirements for a device to output fast-charging to IPP. There’s literally a firmware-check that essentially provides a handshake between an adapter (and cable) that meets the spec, if even one little thing is “off”, no handshake and the ipp resorts to its lowest rate of charge.
 
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mrmsquared said:
12.9” 1st Gen
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OK, well that makes a little more sense. I was wondering why a 36W PD - certified charger wouldn’t be able to provide the full 29/30W that the 12.9 iPPs are capable of drawing.

The first generation 12.9”, however, was released before the USB - C PD specs were finalized, or something to that effect. The fast charging capability of the 1G 12.9” was/is based on the PD spec, or at least as much as existed then. NB: I am paraphrasing, to the best of my ability, one or more forum posts that I read on this site in the past.

Alternatively, the option(s), about which I was/am concerned: this charger is not PD capable OR it just doesn’t support the necessary 2V/14.5+A (29+W) profile that the iPP requires.

EDIT: i don’t know why it took me until now to ask this. Do you mind letting us know what the output specs for this charger are, as it seems that you actually have one? Thanks.
 
Yeah it’s that it doesn’t support the exact spec the ipp is looking for:

Here’s a great article: https://www.macstories.net/ios/testing-apples-29w-usb-c-power-adapter-and-ipad-pro-fast-charging/

“Furthermore, IOKit exposes adapter information that is printed on the physical adapters but not usually reported by iOS itself. When connected to the 12W adapter, iOS refers to it as a 12W "USB brick" (12W = 2.4A x 5V). With that charger and the screen turned off, iOS reports an average gain of 1680 mA, which, considering that electrical efficiencies are never 100% with USB adapters, is pretty good.

On the 29W adapter, on the other hand, Apple printed two output options: 14.5V x 2.0A with 'USB PD' or 5.2V x 2.4A; IOKit exposes 14.8V x 2.0A with USB PD. In both cases, voltage x amperage rounds out at 29W, which is indeed the USB-C power adapter we're dealing with in this case.”
 
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@mrmsquared Thanks for all your replies and for the link to a great article!

Truefan31 said:
I think it's a little weird that there basically isn't a car charger that will fast charge the ipp. It's been over two years since its introduction. There's plenty of wall chargers capable, but afaik very little car chargers.
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Thank YOU, too! I agree. How can there be no PD (29/30W) car chargers anywhere, or at least an 18W one?
 
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have u test Tronsmart U5P 60W USB-C 5-Port PD Desktop Charger with VoltiQ Wall Charger with ipad pro 10.5 for fast charging??
 
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