A:Answer If by "two-prong" you mean a 120-volt AC plug such as in a home, then you want a power "Invertor" that transforms 12-volt DC into 120-Volt AC. The more wattage an invertor puts out, the more they cost but a decent 1000-watt can be had for about $100 US at the tool outlet stores. One caution: they draw a fair amount of current and will run your battery down quickly if you don't have the engine on.
