DeWalt DC740 Instruction Manual page 7

• Do not disassemble charger; take it to an authorized
service center when service or repair is required. Incorrect
reassembly may result in a risk of electric shock, electrocution
or fire.
• Disconnect the charger from the outlet before attempting
any cleaning. This will reduce the risk of electric shock.
Removing the battery pack will not reduce this risk.
• NEVER attempt to connect 2 chargers together.
• The charger is designed to operate on standard household
electrical power (120 Volts). Do not attempt to use it on
any other voltage. This does not apply to the vehicular
charger.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
Chargers
Your tool uses a 12.0, 14.4, 18.0 Volt D
battery can be charged in D WALT 1 Hour Chargers, 15 Minute
E
Chargers or Vehicular 12 volt charger. Be sure to read all safety
instructions before using your charger. Consult the chart at the end
of this manual for compatibility of chargers and battery packs.
Charging Procedure (Fig. 1)
DANGER: Electrocution hazard. 120V and 220V present at
charging terminals. Do not probe with conductive objects. Danger
of electric shock or electrocution.
1. Plug the charger into an appropriate outlet
before inserting battery pack.
2. Insert the battery pack into the charger.
The red (charging) light will blink
continuously indicating that the charging
process has started.
3. The completion of charge will be indicated
by the red light remaining ON continuously. The pack is fully
charged and may be used at this time or left in the charger.
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 weekly or after 10
charge/discharge cycles or whenever the pack no longer delivers
the same amount of work. To use the Automatic Tune-Up™, place
the battery pack in the charger and leave it for at least 8 hours.
Indicator Light Operation
WALT Charger. Your
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Charge Indicators
Some chargers are designed to detect certain problems that can
arise with battery packs. Problems are indicated by the red light
flashing at a fast rate. If this occurs, re-insert battery pack into
the charger. If the problem persists, try a different battery pack to
determine if the charger is OK. If the new pack charges correctly,
then the original pack is defective and should be returned to a
FIG. 1
service center or other collection site for recycling. If the new
battery pack elicits the same trouble indication as the original, have
the charger tested at an authorized service center.
HOT/COLD PACK DELAY
Some chargers have a Hot/Cold Pack Delay feature: when the
charger detects a battery that is hot, it automatically starts a Hot
Pack Delay, suspending charging until the battery has cooled. After
the battery has cooled, the charger automatically switches to the
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