A portable fridge/freezer works by using a compressor-based refrigeration cycle to remove heat from inside and release it outside. With good ventilation and stable power, it keeps food cold efficiently, making it ideal for camping, travel, and off-grid living.

An ice machine freezes water on a chilled evaporator plate, then warms it slightly to release the ice into a bin. Using a refrigeration cycle, water pump, and sensors, it repeats this process automatically for a steady supply of clear, consistent ice.