Work instructions: CD4212-2 lifeboat battery charger Red (red):

alarm instructions when there is an open circuit-reverse connection-short circuit,

the alarm is not output.
Yellow (yellow): charging indicates that the battery is automatically charged when

the battery voltage is lower than 13.3V.
Creen (green): Charging indicates that the battery will automatically stop when

the battery voltage reaches 14.4V.

Technical Parameters:
Working voltage 42V/AC50/60HZ Full voltage 14.4V/DC Supplementary voltage

13.3V/DC Charging current ≤5A (1 way) Size 243×134×80 Weight 5kg Protection

grade IP56 Ambient temperature -25℃~55℃

Instructions:
Wiring sequence: first connect the battery, then 42V/AC/power