Profile: Magnum Energy is a manufacturer of premium inverter & chargers for mobile and renewable energy applications. Our product line includes MMS series, MS Series, inter connection equipment and inverters. Our MMS series is a pure sinewave inverter providing a cost effective solution for those with smaller power needs in mobile applications. MMS Series is easy-to-use and lightweight. It provides a reliable base for your energy system. Our MM612 inverter is designed to accommodate entertainment systems and small appliances in smaller RV's and boats. The MM612 does not include an internal battery charger. It contains internal AC transfer relay, which will allow the incoming power to pass and cause the MM612 to start inverting when the incoming AC is disconnected.