Er... The label on the side of the PS reads '13.65V @20.5 Amps'. The battery leads go into the supply and the part number is a Google P/N. I don't think this is a standard power supply.
One Mr. Wizard that sticks in my mind was a 'Don't Try This at Home' episode where he filled one of those old pump bug sprayers with kerosene (or was it gasoline?) and demonstrated what a nice blowtorch you could make with household utensils. Those were the days!