That was my experience with them as well. I actually took my boots and socks off and put my feet in the snow because the socks were burning my feet.Those battery powered socks were garbage in the 80s. I never bothered to find out if they've improved since then. Used to wear them a lot quail hunting and my feet either froze or felt like they were on fire.
Do yourself a favor brother and snag you a pair of Darn Tough socks. Those jokers with a lighter liner pair will keep you warm and toasty. You'll suddenly have the urge to own 10 pair.