DeWalt DHS790 - Important Safety Instructions for All Battery Chargers; General Charger Safety Rules; Specific Warnings and Charging Procedures

5
ENGLISH
The fuel gauge is an indication of approximate levels of charge remaining in the battery pack
according to the followingindicators:
75–100% charged
51–74% charged
< 50% charged
Pack needs to be charged
To actuate the fuel gauge, press and hold the fuel gauge button. A combination of the three
green LED lights will illuminate designating the level of charge left. When the level of charge in
the battery is below the usable limit, the fuel gauge will not illuminate and the battery will need
to berecharged.
Fig. C
NOTE: The fuel gauge is only an indication of the charge left on the battery pack. It does not
indicate tool functionality and is subject to variation based on product components, temperature
and end-userapplication.
For more information regarding fuel gauge battery packs, please call 1-800-4-
DeWALT
(1-800-
433-9258) or visit our website www.dewalt.com.
The RBRC® Seal
The RBRC® (Rechargeable Battery Recycling Corporation) Seal on the nickel
cadmium, nickel metal hydride or lithium-ion batteries (or battery packs)
indicates that the costs to recycle these batteries (or battery packs) at the
end of their useful life have already been paid by
DeWALT
. In some areas, it
is illegal to place spent nickel cadmium, nickel metal hydride or lithium-ion
batteries in the trash or municipal solid waste stream and the Call2Recycle® program provides
an environmentally consciousalternative.
Call 2 Recycle, Inc., in cooperation with
DeWALT
and other battery users, has established the
program in the United States and Canada to facilitate the collection of spent nickel cadmium,
nickel metal hydride or lithium-ion batteries. Help protect our environment and conserve natural
resources by returning the spent nickel cadmium, nickel metal hydride or lithium-ion batteries to
an authorized
DeWALT
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. RBRC® is a
registered trademark of Call 2 Recycle,Inc.
Important Safety Instructions for All Battery Chargers

WARNING: Read all safety warnings and all instructions for the battery pack,
charger and power tool. Failure to follow the warnings and instructions may result
in electric shock, fire and/or seriousinjury.
• DO NOT attempt to charge the battery pack with any chargers other than the ones in
this manual. The charger and battery pack are specifically designed to worktogether.
• These chargers are not intended for any uses other than charging
DeWALT
rechargeable batteries. Any other uses may result in risk of fire, electric shock orelectrocution.
• Do not expose the charger to rain orsnow.
• Pull by the plug rather than the cord when disconnecting the charger. This will reduce the
risk of damage to the electric plug andcord.
• Make sure that the cord is located so that it will not be stepped on, tripped over or
otherwise subjected to damage orstress.
• Do not use an extension cord unless it is absolutely necessary. Use of improper extension
cord could result in risk of fire, electric shock orelectrocution.
• When operating a charger outdoors, always provide a dry location and use an
extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the
risk of electricshock.
• An extension cord must have adequate wire size (AWG or American Wire Gauge) for
safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that is,
16 gauge has more capacity than 18 gauge. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. When using more than one extension to make up
the total length, be sure each individual extension contains at least the minimum wire size. The
following table shows the correct size to use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The lower the gauge number, the heavier thecord.
Minimum Gauge for Cord Sets
Volts Total Length of Cord in Feet (meters)
120 V 25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7)
240 V 50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
Ampere Rating
American Wire Gauge
More Than Not More Than
0 6 18 16 16 14
6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Recommended
• Do not place any object on top of the 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. The charger is ventilated through slots in the top and
the bottom of thehousing.
• Do not operate the charger with a damaged cord orplug.
• Do not operate the 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 the 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 120V household electrical power. Do
not attempt to use it on any other voltage. This does not apply to the vehicularcharger.

WARNING: Shock hazard. Do not allow any liquid to get inside the charger. Electric shock
mayresult.

WARNING: Burn hazard. Do not submerge the battery pack in any liquid or allow any liquid
to enter the battery pack. 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.

CAUTION: Burn hazard. To reduce the risk of injury, charge only
DeWALT
rechargeable
battery packs. Other types of batteries may overheat and burst resulting in personal injury
and propertydamage.
NOTICE: Under certain conditions, with the charger plugged into the power supply, the
charger can be shorted by foreign material. Foreign materials of a conductive nature, such
as, but not limited to, grinding dust, metal chips, steel wool, aluminum foil or any buildup of
metallic particles should be kept away from the charger cavities. Always unplug the charger
from the power supply when there is no battery pack in the cavity. Unplug the charger before
attempting toclean.
Charging a Battery (Fig. D)
1. Plug the charger into an appropriate outlet before inserting batterypack.
FIG. D
2. Insert the battery pack into the charger, making sure the battery 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
battery pack is fully charged and may be used at this time or left in the charger. To remove
the battery pack from the charger, push the battery release button on the battery pack and
then slide the battery pack out of thecharger.
NOTE: To ensure maximum performance and life of lithium-ion battery packs, charge the battery
pack fully before firstuse.
Charger Operation
Refer to the indicators below for the charge status of the batterypack.
DCB107, DCB112, DCB113, DCB115, DCB118, DCB132
Charging
Fully Charged
Hot/Cold Pack Delay*
* DCB107, DCB112, DCB113, DCB115, DCB118, DCB132: The red light will continue to blink,
but a yellow indicator light will be illuminated during this operation. Once the battery pack has
reached an appropriate temperature, the yellow light will turn off and the charger will resume
the chargingprocedure.
The compatible charger(s) will not charge a faulty battery pack. The charger will indicate faulty
battery pack by refusing tolight.
NOTE: This could also mean a problem with acharger.