Nominal system voltage: 12/24/36/48 Auto Battery input voltage range: 8V~68V Battery type: sealed/Gel/Flooded/User Battery fuse: 150A/58V Rated charge current: 80A Rated charge power: 1000W/12V or 2000W/24V or 3000W/36V or 4000W/48V Max. PV open circuit voltage: 200V (180V at 25 #39;C)