Why would my new iPad Pro power adapter not charge this USB-C power bank?

[MareLuce]

I just purchased a 10,000 mAh power bank with both USB-C and Lightning charging capabilities.
Product description says it can both charge and be re-charged by USB-C and Lightning.
It arrived with a 20% charge.

I could not re-charge the power bank using my new iPad Pro USB-C power adapter + the iPad Pro’s short, skinny USB-C cable. I tried a different USB-C cable as well.
I could re-charge the power bank using my Anker powerport USB charger + the new USB-A to USB-C cable that came with the new power bank.

Is there anything in the product description that could explain that?
https://www.amazon.com/iWALK-10000mAh-External-Portable-compatible/dp/B07J4HYXZC

 

[BrettDS]

That power bank uses the USB C quick charge standard, but the Apple adapter and iPad use the USB C power delivery standard.

Many devices support both standards, but it would appear that your power bank does not.

 

[MareLuce]

Thank you. Darn.

So much find print to read and understand with USB-C.

 

[haruhiko]

I started to buy all my accessories with USB-C PD since 2018 and they are gradually replacing all my previous power banks / chargers / cables. It's investment into future.

 

[Treebark]

That power bank uses the USB C quick charge standard, but the Apple adapter and iPad use the USB C power delivery standard.

Many devices support both standards, but it would appear that your power bank does not.

Quick Charge isn’t really a standard though, is it? Standards are usually set by a governing body. My understanding is that USB-C spec includes PD, but the Quick Charge was an extension of the standard made by...was it Samsung?

So Quick Charge is a commercially created extension toe the USB-C standard.

Maybe seems like making a mountain out of mole hill, but USB-C standard is already confusing enough to convey there may be more than one of them out there.

 

[MareLuce]

My understanding is that USB-C spec includes PD, but the Quick Charge was an extension of the standard made by...was it Samsung?

That was similar to my assumption when I bought this.

I thought the Quick Charge thing was a nice feature but that everything with a USB-C charging port could be charged by the default way (which I now learn is called PD).

Similar to how my USB3 cables work with my USB2 devices too.
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I started to buy all my accessories with USB-C PD since 2018 and they are gradually replacing all my previous power banks / chargers / cables. It's investment into future.

What USB-C powerbanks do you recommend?