Coolers

12-volt electric coolers and cooler/warmers from Koolatron, SmartKool, Road Pro, Coleman, and Michelin, from 8-quart personal sizes up to 52-quart wheeled coolers.

Power: most plug straight into a cigarette lighter socket. If you’ll run one for long periods, check its wattage draw against your vehicle’s outlet.

Need it to freeze, or stay cold on a hot day? A thermoelectric cooler only cools to about 40°F below the outside air. See 12 Volt Refrigerators for compressor fridge-freezers, and our fridge vs thermoelectric cooler guide for how they compare.