I consider this to be a bit of a downgrade - the Mini 1 would accept anything from 12-48 V without negotiation, which made it really easy to power from a vehicle battery or DC wall power (if you have off-grid solar). If you did want to supply it via USB you just needed a small and cheap "dummy load" to negotiate for a voltage in that range. Now, you have to use a PD supply, and those are very hard to find at 36/48 V (in fact, this is the only single one I'm aware of that will do 60 W: https://www.coolgear.com/product/chargeit-mini-82w-usb-type-... ).

36 volts is strange. But also the power supply you mentioned only outputs 20V max.

Edit: also, this supply is a little strange. The specs say input voltage can range from 24-48V, but the image they have shows an input of 24-28V.