Specifications:model : mppt ,nominal system voltage 12v/24v /36v/48v auto work rated battery current : 60a max. Pv open circuit voltage : 150v voltage range : 8~72v max. Pv input power : 800w (12v) / 1600w (24v)/ 2400w (36v) /3200w (48v) self-consumption : 1.4~2.2w grounding : negativ