- 12V DC or 120V AC input; 120V AC output (hardwired)- 1250 watts continuous and 2500 watts DoubleBoost inverter output- 3 stage, 14/55 amp selectable wet/dry cell battery charger- Built-in Isobar® premium AC surge protection and Auto Transfer Switching option for battery backup / UPS operation- Tested to power inverter standards UL458 (USA) and CSA (Canada)- High reliability large-transformer design with protected DC and AC wiring terminals