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00sjsl

macrumors regular
Original poster
Jul 23, 2011
183
97
Hampshire, UK
When I use my iPhone for watching media, I like to have it connected to an external power bank to preserve its battery.

When tried the same thing with a USB-C iPad Pro, I found that when the external power-bank got exhausted the process went in to reverse and the iPad started charging the powerbank.

Is there any way to stop that happening?
 
When I use my iPhone for watching media, I like to have it connected to an external power bank to preserve its battery.

When tried the same thing with a USB-C iPad Pro, I found that when the external power-bank got exhausted the process went in to reverse and the iPad started charging the powerbank.

Is there any way to stop that happening?

As I mentioned in another post, I've also seen this and not heard of any fix. I did get a large-capacity power bank (26,800mAh) and I just make sure that I don't let it run all the way down.
 
As I mentioned in another post, I've also seen this and not heard of any fix. I did get a large-capacity power bank (26,800mAh) and I just make sure that I don't let it run all the way down.
I did see one powerbank advertised that had two usb-c ports an in and an out, but didn't want to buy it in case it had the same problem anyway. This feels like a design fault.
 
I did see one powerbank advertised that had two usb-c ports an in and an out, but didn't want to buy it in case it had the same problem anyway. This feels like a design fault.

Not really - consider how many devices out there act as the iPad does, charging other attached devices. Other than the USB-C iPad, I know of only the iPhone 11 and that does its charging wirelessly.
 
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