12V DC or 120V AC input; 120V AC output; 2 outlets. - 750 watts continuous, 1125 watts OverPower™ and 1500 watts DoubleBoost inverter output. - 3 stage, 20 amp selectable wet/dry cell battery charger. - Auto Transfer Switching option for battery backup / UPS operation. - Reliability enhanced large-transformer design with protected DC wiring terminals.