hi there
I think they are called thermo electric, they can heat and cool.
I know, they are not much than a toy compared to compressor fridges, but
I met a backpacker couple with a cheap Chinese mode (thermo electric warmer and cooler TK20T)l, like a little bar fridge, and they were running this thing on a simple aux starter
battery, swearing it would run for 48 hours and would cool 20 degrees under ambient
temperature. We had 20 that day, and it was on 4, nearly freezing!
And two days later I saw one at an Auto One store, Waeco FT15, for only 150$.
I thought that might be a nice feature for the camper I am building, good enough for 2 liters of milk and the butter.
Did someone
check that thing already for its promises? 20 degree colder, and functional on 12V?
thanks