Tbaldwin said:Ordered a RoadPro RPBH-012 12V Beverage Heater For $10.50 on sale with free shipping at Walmart.com. Reviews on amazon are mixed but I’ll let you know once I give it a go with the pour over method. If it doesn’t work, I’ll check out the butane coffee maker.
Thanks all for the quick and informative responses!
I'm one of the people that gave it a one-star review there. It couldn't boil water hooked to a brand-new battery with all-new large-gauge short-run wiring, then later, after review was already posted, sprang a massive leak while sitting unused full of water for a couple days. I'm not saying it for certain won't work for you-- there are indeed some positive reviews-- but want to warn anyone else about to buy.