The Must PV18-8048 PRO II 2MPPT 8kW off-grid solar inverter is a multifunctional inverter/charger that combines the functions of an inverter, MPPT solar charger, and battery charger to provide uninterruptible power in a portable package. The PV1800 PRO II series can operate without a battery. The maximum PV input voltage can reach 500V, and the MPPT voltage range is 90~430VDC. Two MPPT solar charge controllers are built in. Pure sine waveOverload, short circuit and deep discharge protectionCan work and supply power to the load without batterySmart LCD setting (Working modes, charging current, charging voltage, etc.)Maximum open circuit voltage of the PV array: 500VCombination of solar system, AC grid and battery power supply for continuous power supplyOverload, short circuit and deep discharge protectionCold start functionSupport USB, RS485 monitoring functionWIFI remote monitoring (optional)Support lithium batteries2 (two) MPPT solar controllers allow you to combine 2 independent solar fieldsNominal power8000WPeak power16,000WOutput waveformPure sine waveBattery voltage48VMax. panel idle voltage500VMax. input current from the grid120AMax. Charging current from MPPT120A Efficiency 90-93% Size, mm 425*527*145