The inverter has 4 huge cables and is rigged to a equally large truck battery, all seriously heavy duty stuff. I ran a large pro MIG welder off it with no probs so it should cope with the initial kick required. We plan to run it in short bursts anyway so as not to freeze, we have put a temp sensor in to give us an idea. We will give it a try at w'end and take it from there. We can get loads more in it than the 2 small 3 ways we usually take and it takes up less room too. If it works we are on to a winner