Electric Lunch Box

Mechanism of heating Electric lunch boxes usually include a heating element or a heating plate. The lunch box heats up when plugged into an electrical outlet or a car adapter, producing enough heat to warm the food inside. Power supply: Electric lunch boxes are typically powered by electricity. They can be powered by a standard electrical outlet, a 12-volt cigarette lighter socket in a car, or rechargeable batteries. The power source is determined by the model and its intended use.