12v blanket or mattress pad

You are right. 3 amps plus 3 amps is 6 amps. Each Electrowarmth bunk warmer is rated at 6 amps, drawing current about half of the time. Electrowarmth used to make a short queen size 12 volt mattress pad that was rated for 6 amps (about 3 amps in typical use). Too bad they discontinued that model. Maybe with enough RVers asking for it they would make it again.

I have a question for those who have answered the OP on 12V blanket or mattress pad power usage: Don't these cycle ON and OFF depending upon their heat control settings ... just like 120V blankets and mattress pads do?

If this is true, then their power usage would be less than their constantly-on power usage in amps. For example, a 12V 6 amp blanket or mattress pad that is only ON about half the time each hour would be only consuming 3 amp-hours per hour of battery power, on average, for a battery draw-down over-night of only 24 amp hours.

We love our heated mattress pad. I wouldn't try to run it off the batteries. Different pads & sizes have different energy draws so consult the Mfg website for wattage.

Two 12-volt 36"x60" Electrowarmth bunk pads fit crossways, top and bottom, on a short queen. 6 amp draw would be nothing for my 440 AH bank each night. Combined with a down comforter on top all one would then need is a merino wool stocking cap.

Sourdough Biscuits wrote:
Can I make a suggestion? Instead of the electric blanket/pad, try a down comforter. We use one when it gets cold out and never run the furnace at night. We've camped down to about 15 degrees. Of course, first one up starts the furnace!

Second suggestion. RV's are notorious for having a small amount of solid insulation between your mattress and the outside. Place even 1" styrofoam under mattress and along the exposed sides. Makes a huge difference because if your backside is cold, you are going to be cold no matter what.

Dave

so far only ONE person has answered the OP's question

Can I make a suggestion? Instead of the electric blanket/pad, try a down comforter. We use one when it gets cold out and never run the furnace at night. We've camped down to about 15 degrees. Of course, first one up starts the furnace!

expect 4-7amp hrs of use with a heated 12volt blanket.

how much battery do you have????

what kind of generator do you have?
maybe one of the sub 1K units would work over night?
sound levels?
fuel requirements?
how cold is it outside?

this line of thinking is based on NO 120ac hook up,
or ability to run your generator overnight.

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My wife uses a 12 volt blanket after she gets out of the river in the winter time from doing underwater photography and she loves it.

Anything that produces heat will be a large draw on batteries. My heated mattress runs only on 120 volt power