System Nominal Voltage: 12/24/36/48V Auto Rated Current Charge: 40A Rated Discharge Current: 40A Battery Voltage Range: 8-68V Battery Type Support: Gel/Sealed/Flooded/Lithium Max. PV Open Circuit Voltage: 150V Max. PV Input Power: 520W/12V - 1040W/24V - 1560W/36V - 2080W/48V Self Consumption: 35mA(12V) - 22mA(24V) - 16mA(36V) - 16mA(48V) Discharge Circuit Voltage Drop: 0.23V Grounding: Common negative RS485 Interface: 5VDC/200mA (RJ45) Dimension: 252x180x63mm Terminal amp; recommended cable: 6AWG (16mm2)