APS inverter/charger provides clean, reliable pure sine wave power for all alternative energy needs. This inverter/charger supplies 1000W of continuous 230Vac power. Reliable large transformer design and frequency control powers resistive loads like refrigerators, motors, pumps, compressors and laser printers as well as electronic loads like TV’s, computers, power tool and battery chargers. The 3-stage charging system will properly charge and maintain vehicle's battery or separate battery bank. The charge rate is selectable so you can use variety of battery sizes as well as multiple batteries to fit run time requirements. Multipurpose inverter/charger with seamless transfer switching includes conversion vans, fleet service vehicles, stand alone power source for off grid alternative energy with transfer times of 8 to 12ms.