There is no powerbank that gives off 12V without Power Delivery-negotiation, which the Hi10X does not support. To charge the Hi10X you need an adapter that gives off 12V immediately, which is outside of the USB-standard.
There are however converters available that can negotiate up to 12V over USB with a powerbank (if it’s powerful enough of course, not many powerbanks go up to 12V either way) which you can plug in-between a powerbank and the Hi10X.
This topic has a lot more info and product links to get this kind of setup: