Power for Brume (GL-MV1000)

Is there an alternative to powering brume through the USB-C connector? All my network gear runs off a 12V SLA battery. Yes, I can get some cheap car power thing and rig that up, but I would much prefer to hang it off a good 5V regulator.
Also, I notice that the manual suggests to plug Brume into a laptop. Do laptops now provide 2A of power? I don’t think mine (a bit old) do…

You can use good 5V adapter.

Desktop and laptop USB-A can deliver enough power without problem in our test.

You are suggested to use the included power adapter, not computer