The yellow light indicate charging, green fully charged, red failure. Its advantage is:Automatic float charging; Easily installed; Safe against short circuiting; Inadvertent polarity safe; Double insulated; Indicates charging process; Charges batteries individually; Safe against overheating;Parameter is as below:
Supply voltage: 42V/AC 50/60Hz
Fully charged voltage: 14.4V/DC
Complementary voltage: 13.3V/DC
Charging current: ≤ 5A ( 2 pieces of battery)
Dimensions L× W× H: 243× 134× 80 (mm)
Weight: 5 kgs
Protection grade: IP56
Temperature: -25º C~55º C