... 1.professional engineers 2.quick delivery solar power system,solar energy systemm,solar home system,solar product,solar generator,solar backup ups,PV.solar panel. Technical data: load ... 3%Wasing macine300W11Overload ability120%,30 secondsAir-condition1000W27Invert efficiency>90% Solar panelPmax20000W Vmp72V Imp33.3A ChargerCharger voltage & current20000W48V 20KW solar engergy system on-grid