Order YA4190FAR (includes YA4190CAP and YA4190DIS)
Fuel Gauge
The tool is equipped with a fuel gauge to indicate the
battery's state of charge. It is located on the left side of
the tool at the top of the handle. A round tri-color LED
changes color depending on state of charge. The gauge
is activated for three seconds at each trigger pull. The
following describes its function:
• LED IS GREEN - Battery is between 40% and 100%
charged
• LED IS YELLOW - Battery is between 25% and 40%
charged
• LED IS RED - Battery is between 0% and 25% charged
• LED IS FLASHING RED - Battery needs charging
immediately
Overloading
If the tool is overloaded for any reason the internal
electronics will cause it to stop working. This safety
feature will prevent under voltage, over temperature, and
over current damage to the tool or battery. Release the
trigger to resume operation.
The following conditions may cause temporary
shut-down of the tool as a safety feature to the user, as
well as to prolong the life of the tool and battery.
— Battery under voltage protection - indicated by
one white LED flashing once on the tool, pausing
and then repeating the single flash. This means
the voltage has reached the lowest limit allowed
by the battery manufacturer and the tool will stop
operation to prolong battery life. The battery
voltage may recover after a small rest period. To
do more work, the battery will need charging.
— Battery or tool over temperature - indicated by
one white LED flashing twice on the tool, pausing
and then repeating the double flash. When the
tool is used under heavy load continuously, the
maximum allowable temperature of the switch or
battery may be reached, and the tool will
temporarily stop working. A hot tool will cool in
about 1 minute. A hot battery may require over
15 minutes to cool. When this condition occurs,
the battery will most likely require recharging.
You may want to use another battery to finish the
job. Note: The battery charger will show a
flashing yellow LED until the battery cools
sufficiently to begin charge. When the tool is cold
(less than 4ºF/-20ºC) it may be necessary to run it
a few seconds without load, to warm up the
battery.
— Tool current limit exceeded - indicated by one
white LED flashing three times on the tool,
pausing and then repeating the triple flash. When
the tool is used in an extra-heavy duty
application, the current limit may be reached,
causing shut-down of the tool power. A current
limit will occur if the motor is stalled. Tool
operation can be resumed immediately after
releasing the trigger.
ZCDRR2005CE Rev D
EN
EN
Figure
3: Inserting Battery Pack
Figure
4: Inserting the Battery Pack into the Charger
Battery Charging
1. If charger is supplied with a separate charger cord,
plug cord into charger.
2. Plug the other end of charger into the AC power
source.
3. Insert battery pack in charger. Press lightly on battery
pack until it stops. The charger is equipped with a
4-LED fuel gauge that indicates 25%, 50%, 75% and
100% state of charge. When the battery makes
contact, all 4 green LEDs on the fuel gauge of the
charger will flash twice and then the charger will step
through the 4 LEDs and stop at the one flashing green
LED that signifies the battery state of charge and that
the battery is charging.
4. Certain built-in safety protections may lock the charger
off. If no charger light illuminates, remove the battery
and unplug the charger for 10 minutes. Plug the
charger back in and insert a known good battery. If no
light comes on the charger is faulty and must be
replaced.
9
(07/21)