Conventional reefer trucks operate on diesel as the primary source of fuel and the refrigeration unit consumes 50% of the fuel. Thermal battery enables semi-electric reefer vehicles by decoupling the refrigeration unit from diesel engine. The electric refrigeration unit is plugged onto an electric source when the truck is docked. During this time the refrigeration unit charges/cools down the thermal batteries which caters to the cooling required during movement of the trucks.
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