Light Indications (D in Figure 1)
During the charging process the charging LED may blink alternately between the yellow and the green around 1~60 seconds, please note this is a normal feature.
Safety & Important Information
A) Switching on the charger power but no LED light up
B) Switching on the charger power, red LED is up, green LED flashes but there is no charging
C) The charging time continues for a long duration