Sears Battery Charger 2871234 User Guide

OPERATOR’S MANUAL  
®
BATTERY ChARGER  
60/20/2 Amp  
275/125 AMP  
ENGINE STARTER  
With Battery Tester  
and GFCI Outlets  
Model No.  
28.71234  
CAUTION:  
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.  
00-99-000881/0808  
 
IMPORTANT: REAd ANd SAvE ThIS SAFETY ANd INSTRUCTION MANUAL.  
1.  
IMPORTANT SAFETY INSTRUCTIONS  
1.1  
SAVE THESE INSTRUCTIONS – The DieHard model 71234 Manual Bat-  
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 im-  
portant safety and operating instructions.  
1.2  
1.3  
Do not expose charger to rain or snow.  
Use of an attachment not recommended or sold by the battery charger  
manufacturer may result in a risk of fire, electric shock, or injury to per-  
sons.  
1.4  
1.5  
To reduce risk of damage to electric plug and cord, pull by plug rather than  
cord when disconnecting charger.  
An extension cord should not be used unless absolutely necessary. Use of  
improper extension cord could result in a risk of fire and electric shock. If  
an extension cord must be used, make sure:  
That pins on plug of extension cord are the same number, size, and  
shape as those of plug on charger;  
That extension cord is properly wired and in good electrical condition and;  
That wire size is large enough for AC ampere rating of charger as speci-  
fied in Table 8.3.  
1.6  
1.7  
Do not operate charger with damaged cord or plug; take to a qualified  
service person. (Call customer service at: 800-SEARS-64.)  
Do not operate charger if it has received a sharp blow, been dropped, or  
otherwise damaged in any way; take it to a qualified serviceman. (Call  
customer service at: 800-SEARS-64.)  
1.8  
1.9  
Do not disassemble charger; take it to a qualified serviceman when  
service or repair is required. Incorrect reassembly may result in a risk of  
electric shock or fire. (Call customer service at: 800-SEARS-64.)  
To reduce risk of electric shock, unplug charger from outlet before attempt-  
ing any maintenance or cleaning. Turning off controls will not reduce this  
risk.  
WARNING – RISK OF ExPLOSIvE GASES.  
WORKING IN 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 RISK OF BATTERY ExPLOSION, FOLLOW ThESE  
INSTRUCTIONS ANd ThOSE PUBLIShEd BY BATTERY MANUFAC-  
1 •  
 
TURER ANd MANUFACTURER OF ANY EqUIPMENT YOU INTENd TO  
USE IN vICINITY OF BATTERY. REvIEW CAUTIONARY MARKING ON  
ThESE PROdUCTS ANd ON ENGINE.  
2.  
PERSONAL PRECAUTIONS  
2.1  
Consider having someone close enough by to come to your aid when you  
work near a lead-acid battery.  
2.2  
2.3  
2.4  
Have plenty of fresh water and soap nearby in case battery acid contacts  
skin, clothing, or eyes.  
Wear complete eye protection and clothing protection. Avoid touching  
eyes while working near battery.  
If battery acid contacts skin or clothing, wash immediately with soap and  
water. If acid enters eye, immediately flood eye with running cold water for  
at least 10 minutes and get medical attention immediately.  
2.5  
2.6  
NEVER smoke or allow a spark or flame in vicinity of battery or engine.  
Be extra cautious to reduce risk of dropping a metal tool onto battery. It  
might spark or short-circuit battery or other electrical part that may cause  
explosion.  
2.7  
2.8  
Remove personal metal items such as rings, bracelets, necklaces, and  
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 charger for charging a LEAD-ACID battery only. It is not intended to  
supply power to a low voltage electrical system other than in a starter-mo-  
tor application. Do not use 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.  
2.9  
NEVER charge a frozen battery.  
2.10 WARNING: Pursuant to California Proposition 65, this product contains  
chemicals known to the State of California to cause cancer and birth de-  
fects or other reproductive harm.  
3.  
PREPARING TO ChARGE  
3.1  
If necessary to remove battery from vehicle to charge, always remove  
grounded terminal from battery first. Make sure all accessories in the  
vehicle are off, so as not to cause an arc.  
3.2  
3.3  
3.4  
Be sure area around battery is well ventilated while battery is being  
charged.  
Clean battery terminals. Be careful to keep corrosion from coming in con-  
tact with eyes.  
Add distilled water in each cell until battery acid reaches level specified by  
battery manufacturer. Do not overfill. For a battery without removable cell  
caps, such as valve regulated lead acid batteries, carefully follow manu-  
2 •  
 
facturer’s recharging instructions.  
3.5  
3.6  
Study all battery manufacturer’s specific precautions while charging and  
recommended rates of charge.  
Determine voltage of battery by referring to vehicle owner’s manual and  
make sure that output voltage selector switch is set at correct voltage. If  
charger has adjustable charge rate, charge battery initially at lowest rate.  
4.  
4.1  
4.2  
ChARGER LOCATION  
Locate charger as far away from battery as DC cables permit.  
Never place charger directly above battery being charged; gases from bat-  
tery will corrode and damage charger.  
4.3  
4.4  
4.5  
Never allow battery acid to drip on charger when reading electrolyte spe-  
cific gravity or filling battery.  
Do not operate charger in a closed-in area or restrict ventilation in any  
way.  
Do not set a battery on top of charger.  
5.  
dC CONNECTION PRECAUTIONS  
5.1  
Connect and disconnect DC output clips only after setting any charger  
switches to “off” position and removing AC cord from electric outlet. Never  
allow clips to touch each other.  
5.2  
6.  
Attach clips to battery and chassis, as indicated in 6.5, 6.6, and 7.2  
through 7.4.  
FOLLOW ThESE STEPS WhEN BATTERY IS INSTALLEd IN vE-  
hICLE  
A SPARK NEAR BATTERY MAY CAUSE BATTERY ExPLOSION. TO  
REdUCE RISK OF A SPARK NEAR BATTERY:  
6.1  
6.2  
6.3  
6.4  
Position AC and DC cords to reduce risk of damage by hood, door, or  
moving engine part.  
Stay clear of fan blades, belts, pulleys, and other parts that can cause  
injury to persons.  
Check polarity of battery posts. POSITIVE (POS, P, +) battery post usually  
has larger diameter than NEGATIVE (NEG, N,–) post.  
Determine which post of battery is grounded (connected) to the chassis.  
If negative post is grounded to chassis (as in most vehicles), see (6.5). If  
positive post is grounded to the chassis, see (6.6).  
6.5  
For negative-grounded vehicle, connect POSITIVE (RED) clip from battery  
charger to POSITIVE (POS, P, +) ungrounded post of battery. Connect  
NEGATIVE (BLACK) clip to vehicle chassis or engine block away from  
battery. Do not connect clip to carburetor, fuel lines, or sheet-metal body  
parts. Connect to a heavy gauge metal part of the frame or engine block.  
3 •  
 
6.6  
6.7  
For positive-grounded vehicle, connect NEGATIVE (BLACK) clip from bat-  
tery charger to NEGATIVE (NEG, N, –) ungrounded post of battery. Con-  
nect POSITIVE (RED) clip to vehicle chassis or engine block away from  
battery. Do not connect clip to carburetor, fuel lines, or sheet-metal body  
parts. Connect to a heavy gauge metal part of the frame or engine block.  
When disconnecting charger, turn switches to off, disconnect AC cord,  
remove clip from vehicle chassis, and then remove clip from battery termi-  
nal.  
6.8  
7.  
See OPERATING INSTRUCTIONS for length of charge information.  
FOLLOW ThESE STEPS WhEN BATTERY IS OUTSIdE vEhICLE.  
A SPARK NEAR ThE BATTERY MAY CAUSE BATTERY ExPLOSION.  
TO REdUCE RISK OF A SPARK NEAR BATTERY:  
7.1  
7.2  
7.3  
7.4  
Check polarity of battery posts. POSITIVE (POS, P, +) battery post usually  
has a larger diameter than NEGATIVE (NEG, N, –) post.  
Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to  
NEGATIVE (NEG, N, –) battery post.  
Connect POSITIVE (RED) charger clip to POSITIVE (POS, P, +) post of  
battery.  
Position yourself and free end of cable as far away from battery as pos-  
sible – then connect NEGATIVE (BLACK) charger clip to free end of cable.  
7.5  
7.6  
Do not face battery when making final connection.  
When disconnecting charger, always do so in reverse sequence of con-  
necting procedure and break first connection while as far away from bat-  
tery as practical.  
7.7  
A marine (boat) battery must be removed and charged on shore. To  
charge it onboard requires equipment specially designed for marine use.  
4 •  
 
8.  
BATTERY ChARGING - AC CONNECTIONS  
8.1  
For all grounded cord-connected battery chargers:  
GROUNDING AND AC POWER CORD CONNECTION  
INSTRUCTIONS – Charger should be grounded to reduce risk of electric  
shock. Charger is equipped with an electric cord having an equipment-  
grounding 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 AC cord or plug provided – if it will not fit outlet,  
have proper outlet installed by a qualified electrician. Improper connec-  
tion can result in a risk of an electric shock.  
8.2  
For grounded, cord-connected battery chargers with an input rating  
less 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 adapter, which looks like the adapter illustrated in  
sketches B and C, may be used to connect this plug to a two-pole recep-  
tacle 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 qualified electrician.  
dANGER – Before using adapter as illustrated, be certain that center  
screw of outlet plate is grounded. The green-colored rigid ear or lug ex  
tending from adapter must be connected to a properly grounded outlet–  
make certain it is grounded. If necessary, replace original outlet cover  
plate screw with a longer screw that will secure adapter ear or lug to  
outlet cover plate and make ground connection to grounded outlet.  
5 •  
 
8.3  
Recommended minimum AWG size for extension cords for battery  
chargers:  
AC input rating,  
amperesa  
AWG size of cord  
Length of cord, feet (m)  
But less  
than  
25  
(7.6)  
18  
18  
18  
18  
18  
18  
18  
16  
16  
16  
14  
14  
50  
(15.2)  
18  
18  
18  
18  
16  
16  
14  
14  
12  
12  
12  
100  
(30.5)  
18  
16  
16  
14  
14  
12  
12  
10  
10  
10  
8
150  
(45.6)  
16  
14  
14  
12  
12  
10  
10  
8
At least  
0
2
3
4
5
2
3
4
5
6
6
8
8
10  
12  
14  
16  
18  
20  
10  
12  
14  
16  
18  
8
8
8
6
12  
8
aIf 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  
8.4  
Grounding Methods  
6 •  
 
9.  
PARTS  
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 qualified 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 fire. As such, please con-  
tact 1-800-SEARS-64 for troubleshooting assistance and 1-800-366-PART  
for repair or replacement parts.  
This section shows an illustration of your battery charger. Use it to become  
familiar with the location of all the parts, and what they look like.  
Replacement Parts List diehard 71240:  
Item  
1
description  
Part Number  
3799004100  
0499000050  
0499000053  
2299001465  
3599000262  
0099000587  
3999000108  
3899001165  
3899001164  
90026177  
Plastic Top  
2
Rocker Switch SPST  
Rocker Switch DPDT  
Control Board Assembly  
Handle  
3
4
5
6
Receptacle, GFCI, 15A  
Circuit Breaker  
7
8
Positive (RED) Cable w/clamps  
Negative (BLACK) Cable w/clamps  
Power Cord  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
Power Board/Heatsink Assembly  
Transformer  
2299001467  
93026585  
Fan Motor  
0099000604  
2299001078  
0099000120  
0399000018  
1199005112  
0099000066  
0099000539  
Hardware Kit  
Wheel  
Handle Grip  
Mounting Foot  
Axle  
Owner’s Manual  
7 •  
 
10. ChARGER FEATURES  
11. ASSEMBLY INSTRUCTIONS  
It is important to fully assemble your charger before use. Follow these  
instructions for assembly:  
PARTS  
TOOLS NEEdEd  
Two, 10-32, thread cutting screws  
Four, 1/4-20, thread cutting screws  
Two wheels  
3/8” wrench (for mounting foot)  
5/16” wrench (for wheels)  
Hammer  
One axle  
Phillips screwdriver  
Two axle caps  
Two axle brackets  
One handle  
One handle grip  
One mounting foot  
8 •  
 
TO ATTACh ThE AxLE ASSEMBLY:  
11.1 Remove charger from packing materials and place upside down on a flat  
surface. Attach mounting foot and secure with the four, 1/4-20 thread cut-  
ting screws.  
11.2 Hold axle upright on floor or work surface. Then, using a hammer, tap one  
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 axle caps  
facing each other.  
9 •  
 
11.3 Place the charger on its side. Place one end of each bracket into slot, then  
place the axle assembly under each bracket. Fasten the other side of the  
brackets using the two, 10-32 screws provided.  
11.4 To Attach Handle:  
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. \  
10 •  
 
12. USING ThE GFCI OUTLET  
This charger includes two – GFCI (Ground Fault Circuit Interrupter) outlets  
located on its back. The purpose of a GFCI outlet is to quickly stop the  
flow of electricity in the event a ground fault occurs on the device plugged  
into the battery charger’s GFCI outlet. Ground fault circuit interrupters  
(GFCI) can help prevent electrical shock or electrocution.  
The GFCI outlets provide auxiliary power to 120V devices that require  
less than 15 amps.  
The GFCI must be tested before each use. To test:  
12.1 Push the “Reset” button located on the GFCI receptacle, first to assure  
normal GFCI operation.  
12.2 Plug a night light (with an “ON/OFF” switch) or other product (such as a  
lamp) into the GFCI receptacle and turn the product “ON.”  
12.3 Push the “Test” button located on the GFCI receptacle. The night light or  
other product should go “OFF.”  
12.4 Push the “Reset” button, again. The light or other product should go “ON”  
again.  
NOTE: If the light or other product remains “ON” when the “Test” button  
is pushed, the GFCI is not working properly and should not be used. Call  
Customer Service at 1-800-SEARS-64 (1-800-732-7764).  
12.5 The power cord must be plugged into a 3-prong grounded 120V AC wall  
outlet for the GFCI operation to function. Ground fault circuit interrupters  
(GFCI) can help prevent electrical shock or electrocution.  
12.6 If you are charging a battery, the GFCI outlet should be limited to 3 amps  
of current draw until the charging functions are complete.  
12.7 The GFCI outlet should not be used while the charger is in the ENGINE  
START mode.  
12.8 If using both GFCI outlets at the same time, the amperage cannot exceed  
15 amps of both devices combined.  
13. OPERATING INSTRUCTIONS  
SETTING ThE CONTROLS  
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.  
13.1 POWER ON/OFF SWITCh  
Make sure your charger is OFF when connecting or disconnecting your  
charger from the vehicle and power source. Turn your charger ON only  
when it is connected to the vehicle and plugged into a 3-prong grounded  
wall outlet.  
13.2 BATTERY vOLTAGE SELECT  
When charging, testing or starting 12 volt systems, select 12 VOLT. Select  
11 •  
 
6 VOLT when charging, testing or starting 6 volt systems.  
13.3 TOUCh-PAd CONTROLS  
With your charger connected to the vehicle and power source, the battery  
voltage (6 or 12 volt) selected, and the power turned ON, select either AU-  
TOMATIC or MANUAL charge and the rate at which you want to charge  
your battery (2, 20, or 60 amp).  
AUTO (Automatic): When first turned ON, the charger will be in the  
Manual mode. Touch the AUTO pad and either the 2, 20, or 60 AMP  
Charge Rate Selector pad. Charging will start after a short delay. It will  
stop when the battery is fully charged. While charging, the METER will  
show battery voltage. Touch the VOLTS/AMPS pad to see the amount of  
amps being drawn by the battery.  
MANUAL: When first turned on, the charger will be in the Manual mode  
- there will be no need to select MANUAL. Select a charge rate and time.  
The charger will start charging after a short delay. It will stop charging  
only when the selected time or maximum time is up. For this reason,  
it is IMPORTANT to check the charger frequently to avoid overcharging  
the battery. While charging, the METER will show battery voltage. To see  
how much of the selected charge time is remaining, touch the TIME pad.  
The METER will show the time and, after a short delay, return to showing  
voltage. To see the amount of amps being drawn by the battery, touch the  
VOLTS/AMPS pad.  
TIME: To select a charging time, you must be in the MANUAL mode and  
have selected a charge rate. Touch the TIME pad until the desired time  
shows on the meter. The following chart shows the amount of time avail-  
able for each charge rate and the amount of time, in hours, added for  
each touch of the TIME pad.  
1 HR  
2 HR  
3 HR  
PRESS  
ONE TIME  
PRESS  
TWO TIMES  
PRESS  
THREE TIMES  
TOUCH "TIME" PAD TO ADD INCREMENTS  
RATE  
2 Amps  
20 Amps  
10 Hours  
60 Amps  
5 Hours  
Maximum  
Time  
18 Hours  
Increment  
Settings  
1 Hour  
1 Hour  
1/2 Hour  
12 •  
 
If you do not set a time, the charger will run for the maximum time. After  
selecting the charge rate and proper time, the charger will start charging  
after a short delay. To see how much time remains during the charging  
process, touch the TIME pad.  
RESET: To stop charging or to change settings once charging has begun,  
touch the RESET pad. Then proceed as if you’ve just turned on the  
charger.  
vOLT/AMP: When the charger is turned on the METER will display bat-  
tery voltage. Touch the VOLTS/AMPS pad to display the charge rate in  
amps.  
TESTER: To check the battery’s state-of-charge during charging, touch  
the RESET pad and then the TESTER pad. The METER will show the  
voltage of the battery. Wait about 5 minutes before taking a reading. To  
continue charging, proceed as if you’ve just turned the charger ON.  
ENGINE START: To use the starter feature to help crank the engine of  
your vehicle, touch RESET, MANUAL, and ENGINE START - in that  
order. Wait for the display to show RDY. The ENGINE START feature  
will deliver 275 amps to help crank a 12-volt system or 125 amps to help  
crank a 6-volt system. Crank the engine for no more than 5 seconds.  
If it does not start, wait three minutes before cranking again. During  
extremely cold weather, or if the battery is severely exhausted, charge  
the battery for about 5 minutes in the 60 AMP setting before cranking the  
engine.  
CAUTION: DO NOT try to crank an engine without a battery installed. You  
may damage the vehicle’s electrical system.  
METER: The meter displays the following information:  
—A—  
—V—  
MAN  
AUTO  
RDY  
Charge Rate in amps  
Voltage  
Charger is in Manual mode  
Charger is in Automatic mode  
Charger is ready for cranking  
13 •  
 
(Engine Start)  
WAIT  
FULL  
OFF  
Wait until the charger is ready before cranking again  
Battery is charged (Automatic mode)  
Time has expired (Manual or  
Timer mode)  
HR  
CHK BATT  
OL  
Hour(s)  
There is a problem with the battery or connections  
Too high a charging rate; lower rate to continue  
14. CALCULATING ChARGE TIME  
14.1 The Chart Method  
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 fits 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.  
14 •  
 
ChARGE RATE/  
ChARGING TIME - hOURS  
BATTERY SIZE/RATING  
2 AMP 20 AMP 60 AMP  
6 - 12 AH  
12 - 32 AH  
40 - 60 RC  
2 - 4  
4 - 10  
11 - 14  
NR  
NR  
NR  
NR  
SMALL  
Motorcycle, gar-  
BATTERIES  
den, tractor, etc.  
60 - 90  
min.  
20 - 30  
min.  
200 - 315 CCA  
315 - 550 CCA  
550 - 1000 CCA  
90 - 120  
min.  
30 - 40  
min.  
CAR/TRUCKS  
60 - 85 RC  
14 - 18  
2 - 3.5  
hrs.  
45 - 60  
min.  
85 - 190 RC  
80 RC  
18 - 35  
18  
105 min.  
NR  
NR  
NR  
NR  
2 hrs.,  
45 min.  
140 RC  
160 RC  
180 RC  
27  
MARINE/DEEP CYCLE  
30  
3 hrs.  
33  
3.5 hrs.  
14.2 The hydrometer or Electronic Method  
To nd the time needed to fully charge your battery, determine the bat-  
tery’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.  
PERCENT OF ChARGE  
SPECIFIC GRAvITY  
PERCENT OF ChARGE  
NEEdEd  
1.265  
1.225  
1.155  
1.120  
100%  
75%  
25%  
0%  
0%  
25%  
75%  
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:  
Amp Hours = Reserve Capacity + 16  
2
NOTE: The Reserve Capacity can be obtained from the battery specifica-  
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  
15 •  
 
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  
Charger Setting  
x
1.25  
1.25  
=
=
hours of  
charge  
100 (AH Rating) x .50 (charge needed) x  
50 (Charger Setting)  
6.25  
hours  
100 x .50 = 1.25 x 1.25 = 1.5625  
50  
You will need to charge your 100-Ampere Hour Battery for approximately  
1 1/2 hours at the 50-Amp charge rate using the above example.  
15. USING ThE ENGINE START FEATURE  
Your battery charger can be used to jump-start your car if the battery is  
low. Follow these instructions when using the ENGINE START feature.  
15.1 Set the POWER switch to the OFF position. Then follow the instructions  
for connecting the charger to the battery and power source in the section  
“Charging a battery in the vehicle.”  
15.2 Set the BATTERY switch to 6V or 12V to match the battery’s voltage.  
15.3 Set the POWER switch to the ON position. The METER display will show  
MAN (manual mode).  
15.4 Touch RESET, MANUAL and ENGINE START pads in that order. Wait for  
the display to show RDY. The charger is now ready to have the engine  
cranked.  
15.5 Crank the engine for no more than 5 seconds. If it does not start, wait 3  
minutes. (The display will show WAIT during this time and RDY when the  
time is up.)  
15.6 During extremely cold weather, or if the battery is severely exhausted,  
charge the battery for about 5 minutes in 60 amp setting before cranking  
the engine.  
15.7 If the engine still does not start, charge the battery for five more minutes  
before cranking it again for five seconds.  
15.8 After the engine starts, unplug the charger power cord from the wall outlet.  
Then move the POWER switch to the OFF position before disconnecting  
from the battery.  
16 •  
 
Important:  
Do not try to start the engine without a battery in it. You could cause dam-  
age 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.  
NOTE: The GFCI outlet should not be used while the Charger is in the  
Engine Start Mode.  
16. MAINTENANCE INSTRUCTIONS  
16.1 Before performing maintenance, unplug and disconnect battery charger  
(see sections 6.7 or 7.6).  
16.2 After use, use a dry cloth to wipe all battery corrosion and other dirt or oil  
from terminals, cords, and the charger case.  
16.3 Through routine maintenance, ensure all user installed parts are secured.  
17. STORAGE INSTRUCTIONS  
17.1 Store charger unplugged, in an upright condition. Cord will still conduct  
electricity until it is unplugged from outlet.  
17.2 Store inside, in a dry, cool place (unless you’re using an on-board Marine  
Charger ).  
17.3 Do not store clips on handle, clipped together, on or around metal, or  
clipped to cables.  
17 •  
 
18. TROUBLEShOOTING  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION/REASONS  
No reading on the am-  
meter.  
Clamps are not making a  
good connection.  
Check for poor connec-  
tions to battery and frame.  
Make sure connecting  
points are clean.  
2-amp charge rate is be-  
ing used.  
Ammeter may show no  
activity at the 2-amp  
charge rate.  
Short start cycle when  
cranking engine.  
Drawing more than 250  
amps for a period of 3  
seconds or less.  
Crank time varies with the  
amount of current drawn.  
If cranking draws more  
than 250 amps, crank  
time may be less than 3  
seconds.  
Failure to wait for 4  
minutes (240 seconds)  
between cranks.  
Wait 4 minutes before  
next crank.  
METER reading stays  
high.  
Battery severely dis-  
charged.  
Continue charging battery  
for two more hours. If  
problem continues, call  
Sears Service Center.  
Wrong battery voltage.  
Continue charging battery.  
Ammeter reads less than  
Extension cord too long or Use shorter or heavier  
gauge extension cord.  
selected charge rate when wire gauge too small.  
charging a discharged  
battery.  
Weak cell or sulfated plate Sulfated battery will  
in battery.  
eventually take a normal  
charge if left connected. If  
the battery will not take a  
charge, have it tested by a  
Sears technician.  
Battery is only partially  
discharged.  
Continue charging battery.  
Charger makes a loud  
buzz or hum.  
Transformer laminations  
vibrate (buzz).  
Continue charging. Buzz  
is not abnormal.  
Shorted diode (hum).  
Have charger tested by  
Sears technician.  
If the above solutions do not eliminate the problem  
call toll-free from anywhere in the U.S.A.  
1-800-SEARS-64  
(1-800-732-7764)  
7 AM to 4:30 PM Central Time Monday through Friday  
18 •  
 
19. WARRANTY  
ThREE-YEAR FULL WARRANTY  
If this Battery Charger fails due to a defect in material or workmanship  
within three years from the date of purchase, RETURN IT TO ANY SEARS  
STORE or OTHER DIEHARD OUTLET IN THE UNITED STATES FOR  
FREE REPLACEMENT.  
This warranty gives you specific legal rights, and you may also have other  
rights which vary from state to state.  
Sears, Roebuck and Co.  
Hoffman Estates, IL 60179  
For information about troubleshooting, call toll-free from anywhere in the  
U.S.A. 7 am to 4:30 pm CT Monday through Friday.  
1-800-SEARS-64 (1-800-732-7764).  
For the repair or replacement parts you need, call 7 am to 7 pm, 7  
days a week: 1-800-366-PART (7278)  
19 •  
 
20 •  
 
21 •  
 
22 •  
 

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