Batboard

Hi, I have a Vertex VX3000 UHF 40W Mobile that I am Turning into a base station since I put the awesome new cdm1250 in the car. How many amp power supply should I get to power the Vertex mobile?

Duracomm LP-14 can be had from Hutton. I use them on Vertex bases all the time. Do NOT use any power supply wit Yaesu written on it. They stink. Well, they used to stink, but then I replaced them.