Join Date: Jan 2006
Location: Memphis, TN 38133, USA, Earth, Milky Way
Yes, that's an inverter. It's just packaged with a battery & charger inside the case so that, if any ONE of them goes bad, they want you to toss the whole thing & buy a new one. You'd spend less & get better performance buying them separately. But you don't really need to buy batteries (your truck already has 2) or charger (the truck has an alternator). Of course, that just gets you back to my first reply - the inverter will put off about as much heat as the block heater, so you're wasting the batteries. They'd be better-used either powering the glow plugs, or a 12V block heater (no waste, except a little in the wiring & connections).
But modern inverter generators are VERY quiet & compact. Some can be ganged.
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