... 4,used the modern PWM 5,Automatic constant current constant It use the modern PWM switching technology ... follows:CHARGERBATTERYAC input Voltage rangeVoltage Output Constant voltageCharge current adjustment rangeAutomatic identification of battery voltageReverse battery protectionMerge ... :10-60AHR,Float charging,Wrong connect protection,Short-circuit protection,LEDs signs charging process,With the fuse ...