The best coolbox for you will depend on your personal requirements: the size of your group, the length of your trip, and whether you need freezer capability or not. This guide will help make an informed choice between the different electric coolboxes.
Thermo electric coolers use the Peltier effect as a cooling method. A Peltier cooler (or thermoelectric heat pump) is mounted in the lid of the coolbox, along with a fan system to disperse the heat to outside the box. The heatsink device transfers heat from the inside to the outside, with consumption of electrical energy. Some models of thermoelectric coolbox take advantage of the process to also provide a heating option – by reversing the polarity to change direction of the current, the box can be used to keep things warm inside instead.