For Christmas, my wife gave me an automotive electric blanket that uses the 12 volt power plug. Not sure yet what the wattage on this is but was really wondering if the 12 volt plugs take the power right off the small battery? I am assuming the 110 outlet comes off the big batteries but never really thought about the 12 volt plug beside it. Thinking about how long I can run the electric blanket without having to run the engine to recharge. I'll just put the ignition on accessory.

For those wondering why, here is what is behind the elec blanket. I work a sh*tload of hours at my job and many times I have a couple hours between the OT shift and the regular day shift - plenty of time for a quick nap. I won't sleep in a running car since it wastes gas and carbon monoxide scares me. Since it gets ****ed cold here at night in the winter my wife got me the elec blanket so I don't freeze to death.

On a related question, has anyone tested the 150 watt limit on the 110 volt outlet? I am tempted to test that by seeing how many lightbulbs I can run on it - 150 watt seems so wimpy.....