ACO Power MY50, MPPT Solar Charge Controller, 50 AmpCondition:* New Surplus Stock, In OEM Bulk Packaging. As Pictured.Additional Notes:* 12/24/36/48 VoltDC Automatically Identifying System Voltage.* Rated Charge Current: 50 Amp* Battery Input Voltage Range: 8 Volt68 Volt* Max. PV open circuit voltage: 150 Volt/138 Volt* MPP voltage range: V(BAT)+2 Volt108 Volt* Max. PV input power: 625W/12V, 1250W/24V, 1875W/36V ,2500W/48V* Battery type: Sealed(Defalut)/Gel/Flooded/User. Lead-acid batteries and Lithium-ion batteries* Charging Power and Current Limitation Function* PV short circuit / PV reverse polarity /Battery over voltage /Battery over discharge / Battery reverse polarity / Load overload protectionACO Power MY50