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CHARGERS
Your battery can be charged in DE
WALT 1 Hour Chargers, 15
Minute Chargers or 12-volt vehicle charger. Be sure to read all
safety instructions before using your charger. Consult the chart on
the back cover for compatibility of chargers and battery packs.
Battery Perfomance
Some chargers have a tune-up feature that optimizes battery pack
performance. Your charger may provide Automatic Tune-Up™
Mode or manual (i.e., push button) Tune-Up™ mode. For informa-
tion 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 individ-
ual cells in the battery pack allowing it to function at peak capacity.
Battery packs should be tuned up after every 10th charge/ dis-
charge cycle or whenever the pack no longer delivers the same
amount of work. To use the automatic tune-up mode, place the bat-
tery 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.
3. When the Tune-Up™ mode cycle is complete, the light will stay
on continuously. The pack is fully charged and may be used at
this time or left in the charger.
4. If you select Tune-Up™ Mode and then change your mind,
remove the battery from the charger. After 5 seconds, insert the
battery into the charger. The normal charge cycle will begin.
Charging Procedure
1 HOUR CHARGERS
1. Plug the charger into an appropriate power outlet.
2. Insert the battery pack into the charger making sure the pack is
fully seated in the charger. The red (charging) light will blink con-
tinuously indicating that the charging process has started.
3. The battery pack will be fully charged in about 1 hour. The com-
pletion of charge will be indicated by the red light remaining on
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