Battery Operated Blankets For Camping Is There A Safe, Efficient, Battery-operated Electric Blanket On The Market For Winter Tent Camping?

Is there a safe, efficient, battery-operated electric blanket on the market for winter tent camping? - battery operated blankets for camping

I would like to find the annual for the Boy Scout Camp Iditerod. We are living in tents in January. I am not connected to a car battery, the thing. Comments?