Black & Decker 6/12V-4A Instructions For Use Manual page 5

The battery charger is equipped with safety devices to ensure the utmost safety during
use and operation.
 Full protection against sparks
 Protection against short-circuits
 Voltage compensation
 Protection against overheating
 Protection against polarity reversal
 High protection rating against external agents, IP65
2.6. Battery tests and error indications
The battery charger is designed to determine the battery's condition before and while
charging, and inform about any connection faults between the battery charger and the
battery to charge.
LED / Icon /Error
 Blink
 Blink
CAUSE
Very low battery.
The clamps/rings of the output
lead are not connected correctly
to the battery. Polarity reversal.
Battery voltage too high.
You are attempting to charge
a 24V battery with the
charger settled at 12V or you
are attempting to charge a
12V battery with the charger
settled at 6V.
Battery capacity excessive.
Battery cannot maintain a good
level of charge.
Battery flat.
The battery may be defective.
Battery unrecoverable after a
complete desulfurization cycle.
SOLUTION
Charger is trying to recover the
battery.
Position
correctly and start charging the
battery again.
Check the battery voltage.
Use battery charger with greater
charging capacity.
The battery may be defective.
Contact your battery service
center.
Press the button again, to restart
charging, and try to recover the
battery.
Contact your battery service
center.
The battery may be defective.
Contact your battery service
center.
5
the clamps/rings