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DeWalt DW0249 Instruction Manual

Vehicle charger for 24 volt battery packs
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WALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286
(JUL04) Form No. 608129-02
The following are trademarks for one or more D
scheme; the "D" shaped air intake grill; the array of pyramids on the handgrip; the kit box con-
figuration; and the array of lozenge-shaped humps on the surface of the tool.
1-800-4-DEWALT (1-800-433-9258).

Important Safety Instructions

• SAVE THESE INSTRUCTIONS. This manual contains important safety and operating
instructions for DW0249 battery charger.
• Before using charger, read all instructions and cautionary markings on (1) charger, (2) bat-
tery pack, and (3) product using battery pack.
DANGER: If battery pack case is cracked or damaged, do not insert into charger. Danger of
electric shock or electrocution.
DANGER: 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.
WARNING: Don't allow any liquid to get inside charger. Electric shock may result.
CAUTION: To reduce risk of injury, charge only D
of batteries may burst, causing personal injury and damage.
• 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.
• Do not expose charger to rain or snow.
• Use of an attachment not recommended or sold by D
electric shock, or injury to persons.
• The charger is designed to operate from a 12 volt negative ground vehicle battery system.
DO NOT attempt to use it with any other voltage system without first having the needed mod-
ifications made at a D
WALT certified service center.
• This charger is not intended for any uses other than charging D
ies. Any other uses may result in risk of fire, electric shock or electrocution.
• To reduce risk of damage to electric plug and cord, pull by plug rather than cord when dis-
connecting charger.
• Make sure cord is located so that it will not be stepped on, tripped over, or otherwise sub-
jected to damage or stress.
• The charger is ventilated through slots in the housing. Do not place any object on top of charger
or place the charger on a soft surface that might block the ventilation slots and result in
excessive internal heat. Place the charger in a position away from any heat source.
• Do not operate charger with damaged cord or plug — have them replaced immediately.
• Do not operate charger if it has received a sharp blow, been dropped, or otherwise damaged in
any way; take it to an authorized service center.
• 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.
• To reduce risk of electric shock, unplug charger from outlet before attempting any cleaning.
Removing the battery pack will not reduce this risk.
• NEVER attempt to connect 2 chargers together.
• DO NOT store or use the tool and battery pack in locations where the temperature may reach
or exceed 105°F (such as outside sheds or metal buildings in summer).
• Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, cloth-
ing, and gloves away from moving parts. Loose clothing, jewelry, or long hair can be caught in
moving parts. Air vents often cover moving parts and should also be avoided.


Charge time is approximately one hour.
Battery Packs
When ordering replacement battery packs, be sure to include catalog number and voltage. XR
Extended Run-Time battery packs deliver 25% more run-time than standard battery packs.
Walt battery packs that are labeled "NiMH" should only be used with chargers labeled "NiMH"
or "NiCd/NiMH.
Copyright © 2002, 2004 D
WALT power tools: the yellow and black color
WALT rechargeable batteries. Other types
WALT may result in a risk of fire,
WALT rechargeable batter-
NOTE: Battery storage and carrying caps are provided for use whenever the
battery is out of the tool or charger. Remove cap before placing battery in
charger or tool.
WARNING: Do not store or carry battery so that metal objects can
contact exposed battery terminals. For example, do not place battery in
aprons, pockets, tool boxes, product kit boxes, drawers, etc., with loose nails,
screws, keys, etc. without battery cap. Transporting batteries can possibly
cause fires if the battery terminals inadvertently come in contact with conductive materials
such as keys, coins, hand tools and the like. The US Department of Transportation Hazardous
Material Regulations (HMR) actually prohibit transporting batteries in commerce or on airplanes
(i.e., packed in suitcases and carry-on luggage) UNLESS they are properly protected from short
circuits. So when transporting individual batteries, make sure that the battery terminals are
protected and well insulated from materials that could contact them and cause a short circuit.
The RBRC™ Seal
The RBRC™ (Rechargeable Battery Recycling Corporation) Seal on the
nickel-cadmium battery (or battery pack) indicates that the costs to recycle the
battery (or battery pack) at the end of its useful life have already been paid by
WALT. In some areas, it is illegal to place spent nickel-cadmium batteries in the
trash or municipal solid waste stream and the RBRC program provides an
environmentally conscious alternative.
RBRC in cooperation with D
United States to facilitate the collection of spent nickel-cadmium batteries. Help protect our
environment and conserve natural resources by returning the spent nickel-cadmium battery to an
authorized D
WALT service center or to your local retailer for recycling. You may also contact your
local recycling center for information on where to drop off the spent battery.
Charging Procedure
1. Plug the charger into an appropriate outlet.
2. Insert the battery pack into the charger. Be sure the pack is fully seated in 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 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 mainte-
nance charge; no indicator light shows the completion of the Automatic Tune-Up™ Mode.
Indicator Light Operation

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 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.
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 Pack Charging mode.
This feature ensures maximum battery life. The red light flashes long, then short while in the Hot
Pack Delay mode.
Some chargers have a Problem Power Line indicator. When the charger is used with some
portable power sources such as generators or sources that convert DC to AC, the charger may
temporarily suspend operation, flashing the red light with two fast blinks followed by a
pause. This indicates the power source is out of limits.
The charger and battery pack can be left connected with the red light glowing indefinitely. The
charger will keep the battery pack fresh and fully charged.
NOTE: A battery pack will slowly lose its charge when kept out of the charger. If the battery pack
has not been kept on maintenance charge, it may need to be recharged before use. A battery
pack may also slowly lose its charge if left in a charger that is not plugged into an appropriate
AC source.
WEAK BATTERY PACKS: Chargers can also detect a weak battery. Such batteries are still
usable but should not be expected to perform as much work. In such cases, about 10 seconds
after battery insertion, the charger will beep rapidly 8 times to indicate a weak battery condition.
The charger will then go on to charge the battery to the highest capacity possible.
Fan Cooling
This charger is equipped with an internal fan that provides rapid cooling of D
battery packs. The fan operation is automatic and will turn on when required during battery
charging. This procedure is of great benefit for a pack that has finished a useable cycle. Place
the battery pack into the charger immediately after use so that the fan can cool the cells and pro-
long the life of the battery pack.
WARNING: Fan may blow debris from vent area at any time. Keep face and eyes away from
area above vents. To minimize the risk of eye injury, always use eye protection.
Important Charging Notes
1. When using vehicle chargers, do not charge more than two battery packs without operating
the vehicle. This will prevent excessive discharge of the vehicle battery..
2. Disconnect charger from cigarette lighter socket when not in use to prevent vehicle battery
from discharging.
3. If the battery pack does not charge properly:
a. Ensure the cigarette lighter operates when pushed in the socket.
b. Ensure the cigarette lighter operates when the vehicle's ignition switch is in the
"Accessory" position.
c. Move charger and battery pack to a location where the surrounding air temperature is
approximately 65°F - 75°F (18°- 24°C).
d. If charging problems persist, take or send the tool, battery pack and charger to your local
service center.
4. Longest life and best performance can be obtained if the battery pack is charged when the
air temperature is between 65°F and 75°F (18°- 24°C). DO NOT charge the battery pack in
an air temperature below +40°F(+4.5°C), or above +105°F (+40.5°C). This is important and
will prevent serious damage to the battery pack.
5. The charger and battery pack may become warm to touch while charging. This is a normal
condition, and does not indicate a problem.
6. The battery pack should be recharged when it does not produce sufficient power on jobs
which were easily done previously. DO NOT CONTINUE use under these conditions. Follow
WALT and other battery users, has established programs in the



Summary of Contents for DeWalt DW0249

  • Page 1: Charge Indicators

    • SAVE THESE INSTRUCTIONS. This manual contains important safety and operating instructions for DW0249 battery charger. HOT/COLD PACK DELAY • Before using charger, read all instructions and cautionary markings on (1) charger, (2) bat- Some chargers have a Hot/Cold Pack Delay feature: when the charger detects a battery that is tery pack, and (3) product using battery pack.
  • Page 2 2. Quand le cycle d'une heure de charge est complet, la lumière restera en fonction sans inter- ing, call 1-800-4-DEWALT for a free replacement. ruption et ne clignotera plus. Ceci indique que le paquet est entièrement chargé et peut être utilisé...
  • Page 3 Pour obtenir de plus amples renseignements sur les pièces ou les réparations cou- paquete de la batería es pronto para usar y se puede quitar en cualquier momento durante vertes par la présente garantie, visiter le site ou composer le 1 800 433-9258 Templa -Para arriba modo.
  • Page 4 En tales casos, aproximadamente 10 segundos después de introducir la batería, garantía, visítenos en o llámenos al 1 800 433-9258 (1-800-4-D WALT). Esta el cargador emitirá 8 ‘bip’ rápidos para indicar el estado débil de la batería. A continuación el garantía no aplica a accesorios o a daños causados por reparaciones realizadas o intentadas...