Read and follow all Safety
Rules and Operating Instructions
Before Every Use of this Product.
SAVE THESE INSTRUCTIONS.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
00-99-000880/0808
Page 2
TABLE OF CONTENTS
SECTION PAGE
1. IMPORTANT SAFETY INSTRUCTIONS 1
2. PERSONAL PRECAUTIONS 2
3. PREPARING TO CHARGE 3
4. CHARGER LOCATION 3
5. DC CONNECTION PRECAUTIONS 3
6. WHEN BATTERY IS INSTALLED IN VEHICLE 4
7. WHEN BATTERY IS OUTSIDE VEHICLE 5
8. BATTERY CHARGING - AC CONNECTIONS 6
9. PARTS 5
10. FEATURES 9
11. ASSEMBLY INSTRUCTIONS 9
12. OPERATING INSTRUCTIONS 12
13. CALCULATING CHARGE TIME 13
14. USING THE ENGINE START FEATURE 15
15. MAINTENANCE INSTRUCTIONS 15
16. STORAGE INSTRUCTIONS 15
17. TROUBLESHOOTING 16
Page 3
IMPORTANT: READ AND SAVE THIS SAFETY AND INSTRUCTION MANUAL.
IMPORTANT SAFETY INSTRUCTIONS1.
SAVE THESE INSTRUCTIONS - The DieHard model 71230 Manual Bat-1.1
tery Charger, offers a wide range of features to accommodate the needs
for home or light commercial use. This manual will show you how to use
your charger safely and effectively. Please read and follow these instructions and precautions carefully as this manual contains important safety
and operating instructions.
WARNING: This product contains chemicals known to the State of Cali-1.2
fornia to cause cancer and birth defects or other reproductive harm. Wash
hands after handling.
Do not expose charger to rain or snow.1.3
Use of an attachment not recommended or sold by the battery charger 1.4
manufacturer may result in a risk of re, electric shock or injury to persons.
To reduce the risk of damage to electric plug or cord, pull by the plug 1.5
rather than the cord when disconnecting the charger.
An extension cord should not be used unless absolutely necessary. Use of 1.6
an improper extension cord could result in a risk of re and electric shock.
If an extension cord must be used, make sure:
That the pins on the plug of the extension cord are the same number, •
size and shape as those of the plug on the charger.
That the extension cord is properly wired and in good electrical condition •
and;
That the wire size is large enough for the AC ampere rating of the charger •
as specied in Table 8.3.
Do not operate the charger with a damaged cord or plug; take it to a quali-1.7
ed serviceman. (Call customer service at: 800-SEARS-64).
Do not operate the charger if it has received a sharp blow, been dropped 1.8
or otherwise damaged in any way; take it to a qualied serviceman. (Call
customer service at: 800-SEARS-64).
Do not disassemble the charger; take it to a qualied serviceman when 1.9
service or repair is required. Incorrect reassembly may result in a risk of
electric shock or re. (Call customer service at: 800-SEARS-64).
To reduce the risk of electric shock, unplug the charger from the outlet 1.10
before attempting any maintenance or cleaning. Turning off the controls
will not reduce this risk.
• 1 •
Page 4
WARNING – RISK OF EXPLOSIVE GASES.
WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS REASON, IT IS OF UTMOST
IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME
YOU USE THE CHARGER.
TO REDUCE THE RISK OF BATTERY EXPLOSION, FOLLOW THESE
INSTRUCTIONS AND THOSE PUBLISHED BY THE BATTERY MANUFACTURER AND THE MANUFACTURER OF ANY EQUIPMENT YOU
INTEND TO USE IN THE VICINITY OF THE BATTERY. REVIEW THE
CAUTIONARY MARKINGS ON THESE PRODUCTS AND ON THE
ENGINE.
PERSONAL PRECAUTIONS2.
Consider having someone close enough by to come to your aid when you 2.1
work near a lead-acid battery.
Have plenty of fresh water and soap nearby in case battery acid contacts 2.2
your skin, clothing or eyes.
Wear complete eye protection and clothing protection. Avoid touching your 2.3
eyes while working near the battery.
If battery acid contacts your skin or clothing, wash immediately with soap 2.4 and water. If acid enters your eye, immediately ood the eye with cold running water for at least 10 minutes and get medical attention immediately.
NEVER smoke or allow a spark or ame in the vicinity of a battery or 2.5
engine.
Be extra cautious to reduce the risk of dropping a metal tool onto the bat-2.6
tery. It might spark or short-circuit the battery or other electrical part that
may cause an explosion.
Remove personal metal items such as rings, bracelets, necklaces and 2.7
watches when working with a lead-acid battery. A lead-acid battery can
produce a short-circuit current high enough to weld a ring or the like to
metal, causing a severe burn.
Use this charger for charging a LEAD-ACID battery only. It is not intended 2.8
to supply power to a low voltage electrical system other than in a startermotor application. Do not use this battery charger for charging dry-cell
batteries that are commonly used with home appliances. These batteries
may burst and cause injury to persons and damage to property.
NEVER charge a frozen battery.2.9
WARNING: 2.10 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.
• 2 •
Page 5
PREPARING TO CHARGE3.
If it is necessary to remove the battery from the vehicle to charge it, al-3.1
ways remove the grounded terminal from the battery rst. Make sure all of
the accessories in the vehicle are off, so as not to cause an arc.
Be sure the area around the battery is well ventilated while the battery is 3.2
being charged.
Clean the battery terminals. Be careful to keep corrosion from coming into 3.3
contact with your eyes.
Add distilled water to each cell until the battery acid reaches the level 3.4
specied by the battery manufacturer. Do not overll. For a battery without
removable cell caps, such as valve regulated lead-acid batteries, carefully
follow the manufacturer’s recharging instructions.
Study all of the battery manufacturer’s specic precautions while charging 3.5
and recommended rates of charge.
Determine the voltage of the battery by referring to the vehicle owner’s 3.6
manual and make sure that the output voltage selector switch is set to the
correct voltage. If the charger has an adjustable charge rate, charge the
battery at the lowest rate rst.
CHARGER LOCATION4.
Locate the charger as far away from the battery as the DC cables permit.4.1
Never place the charger directly above the battery being charged; gases 4.2
from the battery will corrode and damage the charger.
Never allow battery acid to drip onto the charger when reading the electro-4.3
lyte specic gravity or lling the battery.
Do not operate the charger in a closed-in area or restrict the ventilation in 4.4
any way.
Do not set a battery on top of the charger.4.5
DC CONNECTION PRECAUTIONS5.
Connect and disconnect the DC output clips only after setting all of the 5.1
charger switches to the “off” position and removing the AC plug from the
electrical outlet. Never allow the clips to touch each other.
Attach the clips to the battery and chassis, as indicated in steps 6.5, 6.6, 5.2
and 7.2 thru 7.4.
• 3 •
Page 6
FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN 6.
VEHICLE.
A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:
NEGATIVE GROUNDED SYSTEM
Position the AC and DC cables to reduce the risk of damage by the hood, 6.1
door, or moving engine parts.
Stay clear of fan blades, belts, pulleys and other parts that can cause 6.2
injury.
Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery 6.3
post usually has a larger diameter than the NEGATIVE (NEG, N, -) post.
Determine which post of the battery is grounded (connected) to the chas-6.4
sis. If the negative post is grounded to the chassis (as in most vehicles),
see step 6.5. If the positive post is grounded to the chassis, see step 6.6.
For a negative-grounded vehicle, connect the POSITIVE (RED) clip from 6.5
the battery charger to the POSITIVE (POS, P, +) ungrounded post of the
battery. Connect the NEGATIVE (BLACK) clip to the vehicle chassis or
engine block away from the battery. Do not connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect to a heavy gauge metal
part of the frame or engine block.
For a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip 6.6
from the battery charger to the NEGATIVE (NEG, N, -) ungrounded post
of the battery. Connect the POSITIVE (RED) clip to the vehicle chassis or
engine block away from the battery. Do not connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect to a heavy gauge metal
part of the frame or engine block.
When disconnecting the charger, turn all switches to off, disconnect the 6.7
AC cord, remove the clip from the vehicle chassis, and then remove the
clip from the battery terminal.
See OPERATING INSTRUCTIONS for length of charge information.6.8
• 4 •
Page 7
FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE. 7.
A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:
Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery 7.1
post usually has a larger diameter than the NEGATIVE (NEG, N, -) post.
Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to 7.2
the NEGATIVE (NEG, N, -) battery post.
Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) 7.3
post of the battery.
Position yourself and the free end of the cable you previously attached to 7.4
the NEGATIVE (NEG, N, -) battery post as far away from the battery as
possible – then connect the NEGATIVE (BLACK) charger clip to the free
end of the cable.
Do not face the battery when making the nal connection.7.5
When disconnecting the charger, always do so in reverse sequence of 7.6
the connecting procedure and break the rst connection while as far away
from the battery as practical.
A marine (boat) battery must be removed and charged on shore. To 7.7
charge it onboard requires equipment specially designed for marine use.
• 5 •
Page 8
BATTERY CHARGING - AC CONNECTIONS8.
For all grounded cord-connected battery chargers: 8.1
GROUNDING AND AC POWER CORD CONNECTION INSTRUCTIONS •
– The charger should be grounded to reduce the risk of electric shock.
The charger is equipped with an electric cord having an equipmentgrounding conductor and a grounding plug. The plug must be plugged
into an outlet that is properly installed and grounded in accordance with
all local codes and ordinances.
DANGER• – Never alter the AC cord or plug provided – if it will not t
the outlet, have the proper outlet installed by a qualied electrician. An
improper connection can result in a risk of an electric shock.
For all grounded, cord-connected battery chargers with an input rating less 8.2
than 15-amperes and intended for use on a nominal 120-volt circuit:
This battery charger is for use on a nominal 120-volt circuit, and has a •
grounding plug that looks like the plug illustrated in sketch A in Figure 8.4.
A temporary adaptor, which looks like the adapter illustrated in sketches
B and C, may be used to connect this plug to a two-pole receptacle as
shown in sketch B if a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can
be installed by a qualied electrician.
DANGER – Before using an adapter as illustrated, be certain that the •
center screw of the outlet plate is grounded. The green-colored rigid
ear or lug extending from the adapter must be connected to a properly
grounded outlet – make certain it is grounded. If necessary, replace the
original outlet cover plate screw with a longer screw that will secure the
adapter ear or lug to the outlet cover plate and make a ground connection to the grounded outlet.
• 6 •
Page 9
Recommended minimum AWG size for extension cords for battery 8.3
If the input rating of a charger is given in watts rather than in
amperes, the corresponding ampere rating is to be determined
by dividing the wattage rating by the voltage rating ± for
example:
1250 watts/125 volts = 10 amperes
Length of cord, feet (m)
AWG size of cord
AC input rating,
amperes
a
But less
than
At least
Grounding Methods
chargers:
8.4
• 7 •
Page 10
PAR TS9.
The Sears service centers offer the following replacement parts for your
battery charger. If you are having trouble with your battery charger, please
contact a qualied service person to diagnose and/or repair your unit. It
is not recommended that the consumer service the internal components
of the battery charger, as improper handling or repair could lead to shock,
electrocution, damage to the charger, or result in re. As such, please contact 1-800-SEARS-64 for troubleshooting assistance and 1-800-366-PART
for repair or replacement parts.
Replacement Parts List DieHard 71230:
ItemDescriptionPart Number
1Handle35-99-000286
2Negative (BLK) Cable w/Clamps38-99-000396
3Positive (RED) Cable w/Clamps38-99-000410
4Power Cord90-026-096
5Circuit Breaker Assembly39-99-000099
6Rectier Assembly22-99-001081
7Transformer93-026-532
8Fan Motor00-99-000063
10Wheel00-99-000080
11Hub Cap52-00-000008
12Axle00-99-000060
13Axle Mtg. Brackets11-99-004366
14Mounting Foot11-99-003352
15Rotary Switch 3 Position 04-99-000052
16Ammeter53-99-100088
17Rocker Switch 2 Position 04-99-000050
• 8 •
Page 11
FEATURES 10.
1
2
3
4
Output Selector Switches1.
Ameter2.
Clamps3.
Wheels4.
ASSEMBLY INSTRUCTIONS11.
It is important to fully assemble your charger before use. Follow these
instructions for assembly:
PARTSTOOLS NEEDED
Two, 10-32, thread cutting screws
Four, 1/4-20, thread cutting scews
Two wheels
One axle
Two axle caps
Two axle brackets
One handle
One mounting foot
Remove charger from packing materials and place upside down on a at
surface. Attach mounting foot and secure with the four, 1/4-20 thread cut-
ting screws.
Hold axle upright on oor or work surface. Then, using a hammer, tap one 11.2
of the plastic axle caps onto the top end of the axle. Be sure to tap the
axle cap on straight. Slide both wheels onto the axle with the recessed
hubs facing out as shown. Install the second axle cap.
• 10 •
Page 13
Place the charger on its side. Place one end of each bracket into slot, then 11.3
place the axle assembly under each bracket. Fasten the other side of the
brackets using the two, 10-32 screws provided.
To Attach Handle:11.4
Turn the charger right side up onto its foot and wheels. Remove the two
top screws from each side of the charger. Align the handle so the screw
holes are aligned with the screw holes on each side of the wheel charger.
Attach the handle using the same screws.
• 11 •
Page 14
OPERATING INSTRUCTIONS12.
200A 12V
ENGINE
START
2A 12V
CHARGE
OFF
40A 12V
CHARGE
SELECT
VOLT/AMP SELECTOR
SETTING THE CONTROLS12.1
All controls for your charger are located on the front of the unit. Follow
these instructions to obtain the accurate charge level for your battery.
Output Selector Switches:12.2
Two switches are used to select the rate of charge or function; a 3-position switch on the right, and a 2-position switch to the left of it. Use the
3-position switch to select:
2 Amp Trickle Charge:• Use for charging small batteries and warming
large batteries. The lower the charge rate, the longer it will take, but the
battery is subjected to much less stress.
OFF: •Leave the switch in the OFF Position while connecting the charger
to the battery and to the AC power outlet.
Select: •This setting enables you to select one of the two settings offered
by the 2-position switch.
Use the • 40 Amp Charge rate for a fast charge.
Use the • 200 Amp Engine Start for cranking the engine. Remember that
little or no charging has been done by the charger and your battery will
still need further charging by the vehicle charging system once the engine
starts.
Ammeter:12.3 Indicates the amount of current measured in amperes that is
being drawn by the battery. For example, in the 40 amp charge rate, a
typical discharged battery will initially draw approximately 40 amps. As
the battery continues to charge, current will taper to 15 to 20 amps at full
charge. The Start area of the meter indicates a high rate of current being drawn from the charger. When cranking an engine, the starter motor
draws upwards to 200-300 amps. The meter needle will be at the extreme
right side of the start area. Sometimes, for the rst few minutes of its
charge, the battery will draw more than 40 amps; in this case, the needle
may be within, but not all the way over, to the right side of the start area.
• 12 •
Page 15
The 2 amp charge rate may not indicate activity on the meter. The meter
does not have the resolution to display this low rate.
CALCULATING CHARGE TIME13.
The Chart Method13.1
Use the following table to more accurately determine the time it will take to
bring a battery to full charge. First, identify where your battery ts into the
chart.
Small batteries — motorcycles, garden tractors, etc. — are usually rated •
in Ampere Hours (AH). For example: 6 to 12 AH, or 12 to 32 AH.
Batteries in cars and smaller trucks are usually rated in Reserve Capacity • (RC), Cold-Cranking Amps (CCA), or both.
Marine or deep-cycle batteries are usually rated in Reserve Capacity • (RC).
• NR means that the charger setting is NOT RECOMMENDED.
Find your battery’s rating on the chart below and note the charge time
given for each charger setting. The times given are for batteries with a
50-percent charge rate prior to recharging. Add more time for severely
discharged batteries. Time is given in hours unless otherwise specied.
CHARGE RATE/
BATTERY SIZE/RATING
CHARGING TIME - HOURS
2 AMP40 AMP
SMALL
BATTERIES
CAR/TRUCKS
MARINE/DEEP CYCLE
Motorcycle, garden, tractor, etc.
200 - 315 CCA40 - 60 RC11 - 1430 to 45 min.
315 - 550 CCA60 - 85 RC14 - 18
550 - 1000 CCA85 - 190 RC18 - 351 - 2 hours
6 - 12 AH2 - 4NR
12 - 32 AH4 - 10NR
45 min - 1
hour
80 RC18NR
140 RC27NR
160 RC30NR
180 RC33NR
• 13 •
Page 16
The Hydrometer or Electronic Method13.2
To nd the time needed to fully charge your battery, determine the battery’s charge level with a hydrometer or electronic Percent-of-Charge
Tester. The following table will help you convert hydrometer readings to
percent of charge values.
SPECIFIC GRAVITYPERCENT OF CHARGE
1.265100%0%
1.22575%25%
1.15525%75%
1.1200%100%
When you know the percent of charge and the Amp Hour (AH) rating of
your battery, you can calculate the approximate time needed to bring your
battery to a full charge.
To convert Reserve Capacity to Amp Hours, divide Reserve Capacity by
2, and add 16:
PERCENT OF CHARGE
NEEDED
Amp Hours = Reserve Capacity + 16 2
NOTE: The Reserve Capacity can be obtained from the battery specica-
tion sheet or the owner’s manual.
To calculate time needed for a charge:
Find the percent of • charge needed. (A battery at 50 percent charge that
will be charged to 100 percent needs another 50 percent (.50)).
Multiply the Amp Hour rating by the charge needed (.50) and divide by •
the charger setting (2 or 10 amps).
Multiply the result by 1.25 and you’ll have the approximate time needed, •
in hours, to bring the battery to full charge.
Add one additional hour for a deep-cycle battery.•
Example:
Amp Hour Rating x charge needed x 1.25 = hours of
Charger Setting charge
100 (AH Rating) x .50 (charge needed) x 1.25 = 1.25
50 (Charger Setting) hours
100 x .50 = 1 x 1.25 = 1.25
50
You will need to charge your 100-Ampere Hour Battery for approximately
1 1/4 hours at the 50-Amp charge rate using the above example.
• 14 •
Page 17
USING THE ENGINE START FEATURE14.
Your battery charger can be used to jump-start your car if the battery is
low. Follow these instructions on how to use the engine start feature.
Set the right-hand OUTPUT SELECTOR switch to the OFF position. Then 14.1
follow the instructions for connecting the charger to the battery in the Operating Instructions section.
Once the charger is connected, set the right-hand selector switch to SE-14.2
LECT and set the left selector switch to the 200 AMP START position.
Plug the power cord into a grounded AC wall outlet.14.3
Crank the engine for 14.4 nomorethanveseconds. If the engine does not
start, wait four minutes before cranking again.
During extremely cold weather, or if the battery is severely exhausted, 14.5
charge the battery for about ve minutes before cranking the engine.
If the engine still does not start, charge the battery for ve more minutes in 14.6
the 40 AMP position before cranking it again for ve seconds.
After the engine starts, unplug the charger power cord from the outlet. 14.7 Then move the right-hand SELECTOR SWITCH to the OFF position before disconnecting the battery leads.
IMPORTANT: Do not try to start the engine without a battery in it. You
could cause damage to the electrical system.
If the engine does turn over, but never starts up, 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 INSTRUCTIONS15.
Before performing maintenance, unplug and disconnect battery charger 15.1
(see sections 6.7 or 7.6).
After use, use a dry cloth to wipe all battery corrosion and other dirt or oil 15.2
from terminals, cords, and the charger case.
Through routine maintenance, ensure all user installed parts are secured.15.3
Servicing does not require opening the unit. There are no user-serviceable 15.4
parts.
STORAGE INSTRUCTIONS16.
Store charger unplugged, in an upright condition. Cord will still conduct 16.1
electricity until it is unplugged from outlet.
Store inside, in a dry, cool place (unless you’re using an on-board Marine 16.2
Charger ).
Do not store clips on handle, clipped together, on or around metal, or 16.3
clipped to cables.
• 15 •
Page 18
TROUBLESHOOTING17.
PROBLEMPOSSIBLE CAUSESOLUTION/REASONS
No reading on the ammeter.
No reading on ammeter.
Fan inside wheel charger
appears to not be working.
Circuit breaker in charger
cycles on and off with a
clicking sound.
Short start cycle when
cranking engine.
Clamps are not making a
good connection.
2-amp charge rate is being used.
No power at receptacle.
AC cord and/or extension
cord is loose.
Shorted battery clamps.
Shorted battery.
Charger leads reversed.
Volt/Amp Selector Switch
set to the START position.
Drawing more than 250
amps for a period of 3
seconds or less.
Failure to wait for 4
minutes (240 seconds)
between cranks.
The charger may be
heated up.
Battery may be severely
discharged.
Check for poor connections to battery and frame.
Make sure connecting
points are clean. Rock
clips back and forth for a
better connection.
Ammeter may show no
activity at the 2-amp
charge rate.
Check for open fuse or
circuit breaker supplying
AC outlet.
Check power cord and
extension cord for loose
tting plug.
Circuit breaker cycles
when current draw is
too high. Separate the
clamps. Check for worn
cables and replace if
needed.
Have a Sears technician
test the battery.
Correct Connections.
Correct Volt/Amp Selector
setting.
Crank time varies with the
amount of current drawn.
If cranking draws more
than 250 amps, crank
time may be less than 3
seconds.
Wait 4 minutes before
next crank.
The thermal protector may
have tripped and needs a
little longer to close. Make
sure that the charger
vents are not blocked.
Wait and try again.
On a severely discharged
battery, charge for 10 to
15 minutes in the 20 amp
manual rate to help assist
in cranking.
• 16 •
Page 19
PROBLEMPOSSIBLE CAUSESOLUTION/REASONS
Ammeter reads less than
selected charge rate when
charging a discharged
battery.
Charger makes a loud
buzz or hum.
Ammeter reading stays
high.
Extension cord too long or
wire gauge too small.
Weak cell or sulfated plate
in battery.
Battery is only partially
discharged.
Transformer laminations
vibrate (buzz).
Shorted diode (hum).
Battery is severely discharged.
Use shorter or heavier
gauge extension cord.
Sulfated battery will
eventually take a normal
charge if left connected. If
the battery will not take a
charge, have it tested by a
Sears technician.
Continue charging battery.
Continue charging. Buzz
is not abnormal.
Have charger tested by
Sears technician.
Continue charging battery
for two more hours. If
problem continues, have
the battery checked by a
Sears or other qualied
service dealer.
• 17 •
Page 20
• 18 •
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