The electric blanket is a great idea. Any hunting supply will have battery-warmed socks, gloves, etc., too.

 

Will the jeeps A/C outlet power an electric blanket or are they too much amperage

 

I would use some type of converter to be on the safe side. Radio Shack has a good selection.

 

I actually saw heat blankets that were made specifically for vehicles about a year ago so maybe look those up

 

I picked up a 12V electric blanket at Cabelas for my wife a couple years ago. Red flannel, can't remeber who makes it. Works well. Has 3 or 4 temperature settings.

She left it on one night and the whole Jeep was warm in the morning. Still fired up fine so I guess amperage draw is'nt that high.

I do run Odyssey 2,000cc Amp batteries though. Might consider one or a Sears platinum if you plan to use it with the engine off for long periods.

 

My first thought was the tent heater, and just crack a window. But an electric blanket (as long as it doesn't kill the battery) would work well too. If you're going with the blanket, I'd either test it out at home (or anywhere where there's ppl to give you a boost if needed) to ensure the battery is still good in the morning, or pack one of those portable boosters.

Something else to consider is those foam panels kits to help insulate the hard top. You'll likely still need a heat source, but it should help keep it warmer inside overall.

 

why not get a power inverter and a small electric heater? and a jumper box incase u drain the battery???