Ah, thank you very much :) I will buy something like that:

It works with most chargers (USB-C), but I definitely recommend one that has real power. Even with a Power Charge charger, it took me many hours to fully charge the Power Bank, but it also has significantly more storage capacity than the original Power Bank for the Vive Pro headset.

A simple usb charger is sufficient.
A controller power supply with a usb-c output should work without a problem.

The battery supports Quick Charge 3.0, which means you can recharge much more quickly if you need a charger with this technology.