Dragonfly Energy's DualFlow Power Packis is a lithium power system designed to alleviate strain on starter batteries by providing dedicated power for hotel loads in long-haul trucks. Engineered for universal compatibility, the DualFlow Power Pack installs inside the sleeper cab under the bunk. The Power Pack removes cycles from the starter batteries to power auxiliary loads while the truck is parked, then, once the truck is back on the road, it uses Wakespeed Charge Control Technology to use available energy without consuming fuel. The Power Pack installs in under an hour and can be mounted in any orientation, and is built with LiFePO4 battery chemistry and a Battery Management System.