Bestcompu New 120W 48V To 12V 10A GOLF CART Voltage Reducer Converter Regulator Input Voltage: 48 nominal Input range: 40V to 60V Input Current: 10A (max) No-load input current: 10mA Output Voltage: DC 12V 2% Output Current: 10A Ripple wave: 50MvStarting delay time:  2S Maximum Efficiency: 90% Insulation resistance: 20M  (between crust and earth, insulation resistance 20M )