Abstract: The invention relates to a battery-based system for powering refrigerated transport and other industrial applications. It includes a battery-based system for supplying power comprising a housing encasing a battery unit, a battery management system connected to the battery unit and operable to manage battery unit, and a power management unit connected to the battery unit and operable to convert battery power from the battery unit to 3 phase power of between 380 and 480 Vac. One exemplary application of the invention is to replace diesel gen-sets in refrigerated transport with more reliable and reduced emission battery power.