We have the US patent for a blanket powered by a battery. We manufacture and distribute battery-powered heating blankets for soccer-hockey-football moms, campers/RVers, the military, first responders, etc. We believe our Waterproof Kodiak Battery Powered Heating Blanket would be a great fit for all hunters, whether that be a “Deer Stand” or “Duck Blind.” It provides 5+ hours of continuous heat per charge. (less)