A portable fridge is a self-contained storage chest that uses an outside power source to control its internal temperature. Unlike a traditional cooler, a portable fridge doesn't rely on ice or freezer packs to keep its contents cool.
Two main technologies portable fridges and freezers are: Compression refrigeration and thermoelectric refrigeration. A third technology (absorption refrigeration) is less common in portable models because it doesn't work unless it's perfectly level, so we won't include it here.
An ice-chilled cooler works for most of a day. But if you want to keep items cool and fresh for multiple days or maintain precise control over the thermostat, a portable fridge is a better choice. Portable fridges are especially popular with:
Campers who want to eat and drink well in the wilderness environment;
Anyone who wants the option of using their fridge as a warming device (more on that below);
Outdoor party hosts who don't want to mess with ice to chill beverages;
Vacationing families who keep perishable snacks on hand during a road trip;
Tailgaters who need a large fridge to serve perishable foods on a warm day;
Anyone who wants to keep cosmetics or a few beverages chilled on a countertop.
