The Expion360 DC to DC mobile charger is designed to rapidly charge Lithium Iron Phosphate (LiFePO4/LFP) chemistry deep cycle house batteries from the vehicle alternator through the chassis battery. The mobile charger is unique in that it uses a 2-stage constant current (CC) constant voltage (CV) charge profile at 14.6 V/25 A. The charger is compact, easy to install, and simple to use. The mobile charger is specifically designed to charge the e360 lithium batteries. It can also be used with other LFP chemistry batteries that recommend the same charge profile.