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0099001395-01
Sears Brands Management Corporation, Hoffman Estates, IL 60179 U.S.A.
Model / Modelo:
28.71323
12V Battery Charger
& Engine Starter
Cargador de baterías 12V
y arrancador
OPERATOR’S MANUAL /
MANUAL DEL USUARIO
CAUTION:
Read and follow all safety
rules and operating instructions
before every use of this product.
SAVE THESE INSTRUCTIONS.
ATENCIÓN:
Lea y siga todas las reglas
de seguridad e instrucciones de uso
antes de cada uso de este producto.
GUARDE ESTAS INSTRUCCIONES.
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DIEHARD® TRES AÑOS DE GARANTÍA TOTAL
Cuando se opere o maneje con las debidas precauciones de acuerdo a las instrucciones,
si el DieHard® falla en alguno de sus componentes de fabricación durante los 3 años
contados a partir de la fecha de compra, regresarlo al autoservicio DieHard® en los estados
unidos para reemplazar el aparato sin costo alguno.
Esta garantía le otorga derechos legales especícos, así como otros derechos, que varían
de estado a estado.
Sears Brands Management Corporation, Hoffman Estates, IL 60179
PARA ASISTENCIA AL CLIENTE O REPUESTOS,
LLAME GRATIS AL 7 AM-5 PM CT
LUNES A VIERNES: 1-800-SEARS-64 (1-800-732-7764)
DIEHARD® THREE-YEAR FULL WARRANTY
When operated and maintained according to all supplied instructions, if this DieHard®
product fails due to a defect in material or workmanship within 3 years from the date
of purchase, return it to any DieHard® outlet in the United States for free replacement.
This warranty gives you specic legal rights, and you may also have other rights
which vary from state to state.
Sears Brands Management Corporation, Hoffman Estates, IL 60179
FOR CUSTOMER ASSISTANCE OR REPLACEMENT PARTS,
CALL 1-800-SEARS-64 (1-800-732-7764) TOLL-FREE
FROM 7 AM TO 5 PM CT.
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CONTENIDOS
INSTRUCCIONES IMPORTANTES DE SEGURIDAD ...................................................9
PRECAUCIONES DE SEGURIDAD PERSONAL ........................................................10
INSTRUCCIONES DE MONTAJE ................................................................................10
CONEXIONES A TIERRA Y ENERGÍA DE CA ............................................................. 10
PANEL DE CONTROL .................................................................................................. 10
INSTRUCCIONES DE OPERACIÓN ............................................................................ 11
MANTENIMIENTO Y CUIDADO ................................................................................... 12
LOCALIZACIÓN Y SOLUCIÓN DE PROBLEMAS .......................................................13
ANTES DE DEVOLVER A REPARACIONES ...............................................................15
CONTENTS
IMPORTANT SAFETY INSTRUCTIONS ........................................................................4
PERSONAL SAFETY PRECAUTIONS...........................................................................4
ASSEMBLY INSTRUCTIONS ......................................................................................... 5
GROUNDING AND AC POWER CORD CONNECTIONS ............................................. 5
CONTROL PANEL .......................................................................................................... 5
OPERATING INSTRUCTIONS ....................................................................................... 5
MAINTENANCE AND CARE .......................................................................................... 7
TROUBLESHOOTING .................................................................................................... 7
BEFORE RETURNING FOR REPAIRS ..........................................................................8
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IMPORTANT SAFETY INSTRUCTIONS
WARNING – RISK OF EXPLOSIVE GASES
WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES
GENERATE EXPLOSIVE GASES DURING NORMAL OPERATION. FOR THIS REASON,
IT IS IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS EACH TIME YOU USE
THE CHARGER.
To reduce the risk of a battery explosion, follow these instructions and those published
by the manufacturer of the battery and any equipment you intend to use in the vicinity
of the battery. Review the cautionary markings on these products and on the engine.
WARNING: Pursuant to California Proposition
65, this product contains chemicals known to
the state of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling.
• Keep out of reach of children.
• Use the battery charger on LEAD-ACID and
AGM-type rechargeable batteries with
recommended rated capacities of 22-59Ah
(12V), as used in automobiles, trucks,
tractors, airplanes, vans, RVs, trolling motors,
etc. This charger is not intended to supply
power to low-voltage electrical systems, other
than in a motor-starting application.
WARNING: Do not use battery charger with
dry cell batteries that are commonly used with
home appliances. These batteries may burst
and cause injury or damage to property.
• Use only attachments recommended or sold
by the battery charger’s manufacturer. Use
of non-recommended attachments may
result in a re, electric shock or injury.
• Locate the battery charger’s power cord so
it cannot be stepped on, tripped over, or
subjected to damage or stress.
• Do not operate the charger if it has received
a sharp blow, been dropped, or otherwise
damaged in any way. Take it to a qualied
professional for inspection and repair.
• Do not disassemble the charger. Take it to a
qualied professional when service or repair
is required.
• To reduce the risk of electric shock, unplug
the charger from the outlet before
attempting any maintenance or cleaning.
• Do not use an extension cord.
• Always charge the battery in a well-
ventilated area.
• Do not set the charger on ammable
materials, such as carpeting, upholstery,
paper, cardboard, etc.
• NEVER smoke or allow sparks or ames in
the vicinity of the battery or engine.
WARNING: RISK OF EXPLOSIVE GAS.
• Operate the charger as far away from the
battery as DC charger cables permit.
• Do not expose the charger to rain or snow.
• NEVER charge a frozen battery.
• NEVER set a battery on top of the charger.
• NEVER place the charger directly above a
battery being charged. Gases from the
battery will corrode and damage the charger.
• NEVER touch the battery clamps together
when the charger is energized.
• When disconnecting the battery charger, pull
by the plug, not by the cord. Pulling on the
cord may cause damage to the cord or plug.
• Do not operate the charger with a damaged
cord or plug.
• NEVER allow battery acid to drip onto the
charger.
• NEVER overcharge a battery.
PERSONAL SAFETY PRECAUTIONS
• Wear complete eye protection and
protective clothing when working near
lead-acid batteries. Always have someone
nearby for help.
• Have plenty of fresh water, soap and baking
soda nearby for use, in case battery acid
contacts your eyes, skin, or clothing. Wash
immediately with soap and water and seek
medical attention.
• If battery acid comes in contact with eyes,
ush eyes immediately for a minimum 10
minutes and get medical attention.
• Neutralize any acid spills thoroughly with
baking soda before attempting to clean up.
• Remove all personal metal items from your
body, such as rings, bracelets, necklaces
and watches. A battery can produce a short
circuit current high enough to weld a ring to
metal, causing a severe burn.
• Do not drop a metal tool onto the battery.
• If it is necessary to remove the battery from
the vehicle to charge it, always remove the
grounded terminal rst.
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ASSEMBLY INSTRUCTIONS
Remove all cord wraps and uncoil the cables prior to using the battery charger.
GROUNDING AND AC POWER CORD CONNECTIONS
This battery charger is for use on a nominal
120 volt. The plug must be plugged into an
outlet that is properly installed and
grounded in accordance with all local codes
and ordinances. The plug pins must t the
receptacle (outlet). Do not use with an
ungrounded system.
NOTE: Pursuant to Canadian Regulations,
use of an adapter plug is not allowed in
Canada. Use of an adapter plug in the
United States is not recommended and
should not be used.
USING AN EXTENSION CORD
The use of an extension cord is not
recommended. If you must use an
extension cord, follow these guidelines:
• Pins on plug of extension cord must be the
same number, size, and shape as those of
plug on charger.
• Ensure that the extension cord is properly
wired and in good electrical condition.
• Wire size must be large enough for the AC
ampere rating of charger, as specied below:
Length of cord (feet)
25 50 100 150
AWG* size of cord
18 16 14 12
*AWG-American Wire Gauge
CONTROL PANEL
LED INDICATORS
CLAMPSREVERSED(red)LEDashing:
The connections are reversed.
CHARGING (yellow/orange) LED lit: The
charger is charging the battery.
CHARGING(yellow/orange)LEDashing:
The charger is in abort mode.
CHARGED/MAINTAINING (green) LED
pulsing: The battery is fully charged and
the charger is in maintain mode.
NOTE: See the Operating Instructions
section for a complete description of the
charger modes.
RATE SELECTION
Use this button to set one of the following
selections:
• 6A<>2A CHARGE/MAINTAIN – For charging
small and large batteries. Not recommended
for industrial applications.
• 10A BOOST – This setting may be used for
a quick boost, prior to using the engine start
setting. Do not use this setting to charge
your battery.
• 50A ENGINE START – Provides additional
amps for cranking an engine with a weak
or run-down battery. Always use in
combination with a battery.
OPERATING INSTRUCTIONS
WARNING: A spark near battery may cause
battery explosion.
IMPORTANT: Do not start the vehicle with
the charger connected to the AC outlet, or it
could result in damage to the charger.
NOTE: This charger is equipped with an
auto-start feature. Current will not be
supplied to the battery clamps until a battery
is properly connected. The clamps will not
spark if touched together.
CHARGING A BATTERY IN THE VEHICLE
1. Turn off all the vehicle’s accessories.
2. Keep the hood open.
3. Clean the battery terminals.
4. Place the charger on a dry, non-ammable
surface.
5. Lay the AC/DC cables away from any
fan blades, belts, pulleys and other
moving parts.
6. For a negative-ground vehicle (as in
most vehicles), connect the charger’s
POSITIVE (RED) clamp to the POSITIVE
(POS, P, +) battery post. Next, connect
the charger’s NEGATIVE (BLACK) clamp
to the vehicle chassis or engine block,
away from the battery.
7. For a positive-ground vehicle, connect the
charger’s NEGATIVE (BLACK) clamp to the
NEGATIVE (NEG, N, -) battery post. Next,
connect the charger’s POSITIVE (RED)
clamp to the vehicle chassis or engine
block away from the battery. NEVER
connect any clamps to the carburetor, fuel
lines or sheet-metal body parts.
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8. Connect the charger to an electrical outlet.
9. Select the desired rate.
10. When charging is complete, disconnect
the charger from the AC power, remove
the clamps from the vehicle’s chassis,
and then remove the clamp from the
battery terminal.
CHARGING A BATTERY OUTSIDE
OF THE VEHICLE
1. Place battery in a well-ventilated area.
2. Clean the battery terminals.
3. Connect a 24-inch long, 6-gauge (AWG)
insulated battery cable to the NEGATIVE
(NEG, N, -) battery post (i.e., jumper
cable) (not provided).
4. Connect the POSITIVE (RED) clamp to
the POSITIVE (POS, P, +) battery post.
5. Position yourself and the “negative post
extension” cable as far away from the
battery as possible, and connect the
NEGATIVE (BLACK) clamp to the cable’s
free end.
6. Connect the charger to the electrical outlet.
7. Select the desired rate.
8. When charging is complete, disconnect
the charger from the AC power,
disconnect the negative clamp, and nally
the positive clamp.
9. A marine (boat) battery must be removed
and charged on shore.
AUTOMATIC CHARGING MODE
When an Automatic Charge is performed,
the charger switches to the maintain mode
automatically after the battery is charged.
ABORTED CHARGE
If charging cannot be completed normally,
charging will abort. When charging aborts,
the charger’s output is shut off and the
CHARGING (yellow/orange) LED will ash.
To reset after an aborted charge, unplug the
charger from the AC outlet, wait a few
moments and plug it back in.
DESULFATION MODE
Desulfation could take 8 to 10 hours. If
desulfation fails, charging will abort and the
CHARGING (yellow/orange) LED will ash.
COMPLETION OF CHARGE
Charge completion is indicated by the
CHARGED/MAINTAINING (green) LED.
When pulsing, the charger has switched to
the maintain mode of operation.
MAINTAIN MODE
(FLOAT-MODE MONITORING)
When the CHARGED/MAINTAINING
(green) LED is pulsing, the charger has
started maintain mode. In this mode, the
charger keeps the battery fully charged by
delivering a small current when necessary.
If the charger has to provide its maximum
maintain current for a continuous 12 hour
period, it will go into abort mode (see Aborted
Charge section). This is usually caused by a
drain on the battery or the battery could be
bad. Make sure there are no loads on the
battery. If there are, remove them. If there are
none, have the battery checked or replaced.
MAINTAINING A BATTERY
The 28.71323 charges and maintains 12 volt
batteries, keeping them at full charge.
NOTE: The maintain mode technology
allows you to safely charge and maintain a
healthy battery for extended periods of time.
However, problems with the battery, electrical
problems in the vehicle, improper
connections or other unanticipated conditions
could cause excessive current draws. As
such, occasionally monitoring your battery
and the charging process is required.
USING THE ENGINE START SETTING
Your battery charger can be used to jump
start your car if the battery is low. Follow all
safety instructions and precautions for
charging your battery. Wear complete eye
protection and clothing protection.
WARNING: Using the ENGINE START setting
WITHOUT a battery installed in the vehicle will
damage the vehicle’s electrical system.
NOTE: If you have charged the battery and
it still will not start your car, do not use the
Engine Start setting, or it will damage the
vehicle’s electrical system. Have the battery
checked.
1. With the charger unplugged from the
AC outlet, connect the charger to the
battery, following the instructions given
in the CHARGING A BATTERY IN THE
VEHICLE section.
2. With the charger plugged in and connected
to the battery of the vehicle, set the rate
selection to the Engine Start position.
3. Crank the engine until it starts or 3
seconds pass. If the engine does not
start, wait 3 minutes before cranking
again. NOTE: During extremely cold
weather, or if the battery is under 2 volts,
use the 10A Boost setting for 5 minutes
before cranking the engine.
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4. If the engine fails to start, boost the
battery for 5 more minutes before
attempting to crank the engine again.
5. After the engine starts, unplug the AC
power cord before disconnecting the
battery clamps from the vehicle.
NOTE: If the engine does turn over but never
starts, there is not a problem with the starting
system; there is a problem somewhere else
with the vehicle. STOP cranking the engine
until the other problem has been diagnosed
and corrected.
MAINTENANCE AND CARE
A minimal amount of care can keep your
battery charger working properly for years.
• Clean the clamps each time you are
nished charging. Wipe off any battery uid
that may have come in contact with the
clamps to prevent corrosion.
• Occasionally cleaning the case of the
charger with a soft cloth will keep the nish
shiny and help prevent corrosion.
• Coil the input and output cords neatly when
storing the charger. This will help prevent
accidental damage to the cords and charger.
• Store the charger unplugged from the AC
power outlet in an upright position.
• Store inside, in a cool, dry place. Do not
store the clamps clipped together, on or
around metal, or clipped to the cables.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Battery clamps do not
spark when touched
together.
The charger is equipped
with an auto-start feature.
It will not supply current to
the battery clamps until a
battery is properly connected.
The clamps will not spark if
touched together.
No problem; this is a normal
condition.
Three LEDs come on
for 2 seconds, then
turn off.
The charger is plugged into an
AC outlet.
No problem; this is normal.
The charger will not
turn on when properly
connected.
AC outlet is dead.
Poor electrical connection.
Battery is defective.
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and extension
cord for loose tting plug.
Have battery checked.
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PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Short or no start cycle
when cranking engine.
Drawing more than the Engine
Start Rate.
Failure to wait 3 minutes (180
seconds) between cranks.
Clamps are not making a
good connection.
AC cord and/or extension cord
is loose.
No power at receptacle.
The charger may be
overheated.
Battery may be severely
discharged.
Crank time varies with the amount
of current drawn. If cranking draws
more than the Engine Start Rate,
crank time may be less than 3
seconds.
Wait 3 minutes of rest time before
the next crank, to allow the battery
and charger to cool down.
Check for poor connection at
battery and frame.
Check power cord and extension
cord for loose tting plug.
Check for open fuse or circuit
breaker supplying AC outlet.
The thermal protector may have
tripped and needs a little longer to
close. Make sure the charger vents
are not blocked. Wait and try again.
On a severely discharged battery,
use the 10A Boost setting for few
minutes, to help assist in cranking.
BEFORE RETURNING FOR REPAIRS
• When a charging problem arises, make
certain that the battery is capable of
accepting a normal charge. Double check all
connections, the AC outlet for a full 120 volts,
the charger clamps for correct polarity and
the quality of the connections from the cables
to the clamps and from the clamps to the
battery system. The clamps must be clean.
• When an UNKNOWN OPERATING
PROBLEM arises, please read the complete
manual and call the customer service
number for information. This will usually
eliminate the need for return.
If the above solutions do not eliminate the problem,
or for information about troubleshooting or replacement parts,
call toll-free from anywhere in the U.S.A.
1-800-732-7764
7:00 am to 5:00 pm CT, Monday through Friday
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