Mecer Axpert 5.6K MKS IV 5600VA / 5600W 48V Pure Sine Wave MPPT Inverter charger, Up to 9 units parallel capability, 10 ms transfer time, Pure Sine Wave Waveform, 93% efficiency (Peak), 48 VDC battery voltage, 450 VDC Maximum PV Array open Circuit voltage, 6000 W Maximum PV Array power