AIMS Power 1500 Watt Pure Sine Low Frequency Inverter with built-in battery charger and transfer switch. This inverter charger is perfect for small-sized industrial applications that depend upon power being available even under heavy load. This heavy-duty inverter charger is ready to go wherever you need it. Use this product for renewable solar, off-grid home and business back up power, mobile and emergency backup power applications anywhere that uses 110 or 120 volts of alternating current.