Charge Controller Type : MPPT Typical Batt Voltage (V) : 12 V Rated Output Current (A) : 20 A Input Voltage Range : 18-32 Vdc Max PV Open Voltage : 37V Nominal Battery Voltage : Programable to Battery Type Typical Idle Current : 90% Features : Battery Voltage Settings: Boost Charging; Boost Return; Float Charging Battery Low Load Disconnect, Load Reconnect Temp Compensation :18mV/C" Protection : Surge, Over charge, Overload, Short Circuit, Solar and Battery reverse, Revere current from battery at night Enclosure : Open Frame, Only PCB assembly with Chassis will be Supplied