Specification:Dimensions: 135x90x50mmBattery type: Li-ion batteryWorking power: 220-240Vac, 50HzSuitable for Battery Voltage: 51.8VOutput voltage: 58.8V (For 14S Li-ion Battery)Output current:5Abattery Protection: SCP,OVP,OCP,OTPCharging mode: constant current - Constant Voltage - trickle charge three-stage intelligent charging Charging efficiency: 85% (full load)Working temperature: -5 ~ +40 Storage temperature: -40 ~ +70 AC power cord, DC connector can be customized.Operating Instruction1. Before charging, please connect the DC terminal to battery first, and then connect the AC terminal.2. After charging complete, unplug the AC terminal firstly, and then unplug the DC terminal.3. No charging or after charging complete, be sure to unplug the DC terminal and AC terminal.LED Indicator: LED 1 red: Power on.LED 2 red: Battery being charged.