Question about RAVPower Rp-Pb059

It should work with any charger that supports 20V/1.5A (30W) via USB-C as fast as the original charger that can't be found on the internet.
Available here, for example, are the Aukey PA-D1 (30W)
Aukey PA-D1 (30W)
or also the Aukey PA-D2 (36W) with two ports.
Aukey PA-D2 (36W)
Sometimes, however, there are surprising incompatibilities if, contrary to expectations, Aukey does not work:
So far, I have only seen the Anker PowerPort III mini in Germany.
https://techtest.org/das-anker-...
These should all be highly compatible power supplies.

Only Digitec itself can answer this question. The question is rather misplaced in the community.

But you can use any other USB power supply to charge the battery pack. It may be faster or slower depending on the power supply.