8
How to use the charger
Charge cycle and LED indications
LED MODE
YELLOW Battery not connected
YELLOW Battery initialisation and analysis
ORANGE Fast charge
GREEN with intermittent
YELLOW flash
Top-Off Charge
GREEN Trickle Charge
Alternating ORANGE-GREEN ERROR
The charger is started by connecting the battery
pack to the charger and then connecting the
charger to the mains.
The LED (light emitting diode) will be yellow before
the fast charge starts and the LED changes to
orange. When the batteries are fully charged and
the voltage drops because of the -dV signal from
the batteries, the charger will go into a top-off
charge mode before it goes over to trickle charge
mode. During top-off charge the LED will be
green with a short intermittent yellow light. When
the top-off charge is completed, the charger will
go into trickle charge mode and the LED will be
green. The charge current is now reduced to a safe
level, which allows the charger to stay connected
to the NiCd batteries without damaging the
batteries. NiMH batteries are not as well suited for
trickle charge, and some battery manufacturers
recommend that trickle charge does not exceed 24
hours. If in doubt; contact the battery manufacturer
for details.
If the safety timer runs out before –dV is detected,
the charger will go directly to trickle charge mode
(no top-off charge) and LED will be continuously
green. lf the battery voltage is far below normal,
the charger will cut the fast charge current and go
to trickle charge mode. The LED will then indicate
”error” by flickering green and orange light.
lf the mains input voltage is turned off, the charger
will reset. When the mains input voltage is turned
on again a new charge cycle will start.
lf new batteries are to be connected, the charger
must idle for approx 15 sec. to make sure all
parameters in the microprocessor have been reset.
When the charger has been reset the LED changes
to yellow, and a new charge cycle can begin.
When the mains is connected the LED will be
orange for the first seconds and then turn to
yellow when the initialisation and analysis starts.
lf a battery is connected, the actual charging will
start a few seconds later when the LED changes
to orange. After the start-timer period has run out
(the first few minutes of the charge cycle when the
–dV detection is disabled), the LED will be green
for approx. 8 seconds. This is a signal for testing
and service only. When -dV has been detected, the
start of the top-off charge is indicated with a green
LED with intermittent yellow flashes. The LED is
green during trickle charge.
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