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procedure. You may also charge a partially used pack whenever you
desire with no adverse affect on the battery pack.
5. Under certain conditions, with the charger plugged into the power
supply, the exposed charging contacts inside the charger can be
shorted by foreign material. Foreign materials of a conductive nature
such as, but not limited to, steel wool, aluminum foil, or any buildup
of metallic particles should be kept away from charger cavities.
Always unplug the charger from the power supply when there is no
battery pack in the cavity. Unplug charger before attempting to clean.
6. Do not immerse charger in water or any other liquid.
WARNING: Don't allow any liquid to get inside charger. Electric
shock may result. To facilitate the cooling of the battery pack after use,
avoid placing the charger or battery pack in a warm environment such
as in a metal shed, or an uninsulated trailer.
CAUTION: Never attempt to open the battery pack for any reason.
If the plastic housing of the battery pack breaks or cracks, return to a
service center for recycling.
IMPORTANT
This product is not user servicable. There are no user servicable parts
inside the charger. Servicing at an authorized service center is required
to avoid damage to static sensitive internal components.
READ ALL OF THE INSTRUCTIONS IN THE BATTERY CHARGER
SECTION OF THIS MANUAL BEFORE ATTEMPTING TO CHARGE
THE BATTERY PACK FOR YOUR TOOL.
Always use correct battery pack (pack supplied with tool or
replacement pack exactly like it.) Never install any other battery pack.
It will ruin your tool and may create a hazardous condition.
BATTERY PERFORMANCE
Some chargers have a tune-up feature optimizes battery pack
performance. Your charger may provide Automatic Tune-Up™ Mode
or manual (i.e. push button) Tune-Up™ mode. For information on this
feature, please see the appropriate section below. Because batteries
slowly lose their charge when they are not on the charger, the best
place to keep your battery pack is on the charger at all times.
Using Automatic Tune-Up™ Mode
The Automatic Tune-Up™ Mode equalizes or balances the individual
cells in the battery pack allowing it to function at peak capacity.
Battery packs should be tuned up after every 10th charge/ discharge
cycle or whenever the pack no longer delivers the same amount of
work. To use the automatic tune-up mode, simply place the battery
pack in the charger and leave it for at least eight hours. The charger
will cycle through the following modes.
1. The red light will blink continuously indicating that the 1-hour
charge cycle has started.
2. When the 1-hour charge cycle is complete, the light will stay on
continuously and will no longer blink. This indicates that the pack
is fully charged and can be used at this time.
3. Whenever the pack is left in the charger after the initial 1-hour
charge, the charger will begin the Automatic Tune-Up™ Mode.
This mode continues up to 8 hours or until the individual cells in
the battery pack are equalized. The battery pack is ready for use
and can be removed at any time during the Tune-Up™ Mode.
4. Once the Automatic Tune-Up™ Mode is complete the charger
will transition to a maintenance charge; no indicator light shows
the completion of the Automatic Tune-Up™ Mode.
Using the Manual Tune-Up™ Mode
The manual Tune-up™ mode equalizes or balances the individual
cells in the battery pack at its peak capacity. This mode takes up to 8
hours to complete. Battery packs should be tuned up weekly or after
10 to 20 charge/discharge cycles or whenever the pack no longer
delivers the same amount of work.
1. To tune up your battery pack, place the battery in the charger as
usual. The red light will blink continuously indicating that the
charge cycle has started.
2. Press the Tune-Up™ Mode button any time after the charge cycle
has started. The red light will stop blinking momentarily, blink
quickly 3 times, and then resume blinking continuously. The
charger is now tuning up the cells in your battery.
