PowerMax PM3-20-48 PM3 Series 48v Charger 20 Amps Trailer Camper RV Features:3 Stage Charger built in standardBuilt in Smart ChargersReverse battery protectionUL & CUL Approved2 year standard warrantySpecs: DC Output Voltage (No Load) approx.54.4V (DC)Output Voltage Tolerance (No Load)(+ or -0.7%)Output Amperage, Max Continuous20 AmpsOutput Voltage (Full Load) approx.54.4V (DC)Max Power Output, Continuous545 WattsInput Voltage Range105-135 ACInput Voltage Frequency47-63Max AX Current @ 108VAC10 ampsTypical Efficiency90%Max Inrush Current, Single Cycle40 ampsShort Circuit ProtectionYesOverload Protection100%Line Regulation100 mV rmsLoad Regulation<1.0%Fan ControlProportionalThermal ProtectionYesWorking Temperature Range0-45CStorage Temperature(-20) to 80CWithstand Voltage1240V @ leadsDimensions5″ x 10.5″ x 4″Weight9 lbs.THANKS FOR LOOKING!