Name:Charger for 48V/20AH battery Input Voltage(Max.Charging Voltage):59V + 0.5V Max.Charging Current:2.5A Protective Current:2.6A Maintaining Voltage:56V+ 0.5V Maintaining Current:0.4A+ 0.5V Environmental temperature: -10℃～40℃ Current sample in restrainedly high voltage:1.8A Time of restrainedly high voltage:3H Size: 185X110X63(mm) Net weight:0.6Kg