The best 48V NiMH/NiCD Battery Intelligent Charger in the market Charger Switches to Trickle status automatically when any of the following criteria is reached:(The strongest protection for your battery)Minus V Value > 3~5 mV/cellOr Maximum Cell Voltage > 1.56V/cell(NI-MH)1.7V/cellNI-CDOr Max. Cell Temp.>55Or Max. Cell Temp. exotherm >18Or Safety Timer=18hoursCompatible with 48V NiMH/NiCD Battery from 1.6AH to 30AH Charge current2A 0.2A Reversal polarity and Short-Circuit Protection ThermistorNTC type, 10K and =3950 Input voltage90~264VAC 50/60Hz DimensionsL/W/H, 148mm/78mm/43mm Power Indication & LED IndicationsPower ON -- Red FlashingCharging -- RedFully Charged -- GreenErrors Red Flashing Accessories Included Water Proof 3 Pin kirksite Connector (male and female) Tamiya Female connector.Alligator clips red + black.