I have a Wo-We that I bought earlier. I just checked the power plug for it and it indeed says output 19V. However I have been operating the WO-WE off my DC power supply since I received it with no problems. I run most everything in my shack from the DC power supply. I've also tested it off a Powerwerx 30ah LiFePo battery. No problems. The cable runs from the DC plug to the Anderson Power Pole connector on the DC distro panel. You should be fine.?
Kevin, WA4KBM