Tripp Lite APS2448UL Inverter / Charger 2400W 48V DC to 120V AC 15A Hardwire UL rated 2400 watts continuous output power; up to 4800 watts instantaneous power Extended peak surge power handles heavy connected loads Auto-transfer switching option for battery backup (UPS) operation Hardwire AC input/output; rugged moisture-resistant polycarbonate housing 1-year warranty