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You can run a refrigerator with a flame. And no, I do not mean some dangerous ammonia ice ball contraption from the 1920s. I mean a real electric mini fridge powered by one of our PiggyPower cells. In this video, I used the PiggyPower Ember. You apply heat to one side, water to the other, and that temperature difference produces electricity. I connected it directly to this little five volt fridge and watched the cooling plate drop to 54 degrees in about three minutes. Honestly, this is a pretty big job for the Ember. It was designed mainly for smaller loads like lights, fans, radios, phones, and USB devices. I really just wanted to see whether it could run the refrigerator at all, and it did. For serious refrigeration, I would recommend one of our larger PiggyPower systems. We make units all the way up to 250 watts that can charge a battery bank and power much larger equipment through an inverter. The Ember can run from candles, alcohol burners, grills, wood stoves, and other steady heat sources. Heat goes in. Electricity comes out. You can find the PiggyPower Ember and our larger systems at OfficialPiggyPower.com.