Sears 20071225 User Manual

OPERATOR’S MANUAL  
®
Microprocessor Controlled,  
Fully Automatic Operation  
Battery Charger  
with Engine Starter  
Plus Battery and Alternator  
Tester  
2-amp slow charge  
12-amp fast charge  
30-amp rapid charge  
80-amp engine start  
FOR 6 ANd 12-VOLT  
BATTERIES  
Model No.  
200.71225  
CAUTION:  
Read all Safety Rules and Operating Instructions,  
and follow them with each use of this product.  
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.  
00-99-000878/0808  
IMPORTANT: REAd ANd SAVE THIS SAFETY ANd INSTRUCTION MANUAL.  
1.  
IMPORTANT SAFETY INSTRUCTIONS  
1.1  
SAVE THESE INSTRUCTIONS – This manual contains important safety  
and operating instructions. The DieHard model 71225 Manual Battery  
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.  
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 8.2.  
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.  
1.10 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.  
1 •  
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-  
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.  
2 •  
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-  
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  
Attach clips to battery and chassis, as indicated in 6.5, 6.6, and 7.2  
through 7.4.  
3 •  
6.  
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:  
NEgATIVE gROUNdEd SYSTEM  
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  
6.6  
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.  
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.  
6.7  
6.8  
When disconnecting charger, turn switches to off, disconnect AC cord,  
remove clip from vehicle chassis, and then remove clip from battery termi-  
nal.  
See OPERATING INSTRUCTIONS for length of charge information.  
4 •  
7.  
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.  
5 •  
8.  
BATTERY CHARgINg - AC CONNECTIONS  
8.1  
For all grounded cord-connected battery chargers with an input rat-  
ing 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  
8.3. 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.  
6 •  
8.2  
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  
8.3  
Grounding Methods  
7 •  
9.  
FEATURES  
1. Carrying Handle  
2. Charger Status LEDs  
3. Display Mode Select Switch  
4. Battery Type Select Switch  
5. Charge Rate Select Switch  
6. Digital Display  
7. Battery Clamps  
10. ASSEMBLY INSTRUCTIONS  
Included with your battery charger are two cord wrap cleats for storage of  
the clamp cables.  
10.1 To install, align the two tabs to correspond with the two receptacles and  
push until you hear a snap.  
11. USINg THE ENgINE START FEATURE  
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.  
IMPORTANT: Follow all safety instructions and precautions when charg-  
ing your battery. Wear complete eye protection and clothing protection.  
Charge your battery in a well-ventilated area.  
IMPORTANT: Using the ENGINE START feature WITHOUT a battery  
installed in the vehicle could cause damage to the vehicle’s electrical  
system.  
11.1 For battery connections, see CHARGING BATTERY IN THE VEHICLE  
section. With the charger plugged in and connected to the battery of the  
vehicle, set the CHARGE RATE to 80A START. Only the 80A START,  
CHARGING, and VOLTAGE LEDs should be lit, unless the 6V REGULAR  
battery type has been selected. In that case, the 6V REGULAR LED will  
also be lit.  
11.2 Crank the engine until it starts or 5 seconds passes. If engine does not  
start, wait 3 minutes before cranking again.  
11.3 After the engine starts, unplug the power cord before disconnecting the  
output clamps from the battery.  
8 •  
11.4 Clean and store the charger in a dry location.  
NOTE: During the starting sequence listed above, the charger is set to  
one of three states.  
11.5 Engine Starting Notes:  
wait for cranking - The charger waits until the engine is actually being  
cranked before delivering 80 amps for engine start. The charger delivers  
charge at a rate of up to 12 amps while waiting and will reset if the engine  
is not cranked within 15 minutes. (If the charger resets, it sets itself for a  
2A charge and 12V REGULAR battery.) While waiting for cranking, the  
digital display shows the battery voltage (it can’t be set to percent).  
Cranking - When cranking is detected, the charger will automatically  
deliver up to its maximum output (at least 80A) as required by the starting  
system for up to 5 seconds or until the engine cranking stops. The digital  
display shows a countdown of the remaining crank time in seconds. It  
starts at 5 and counts down to 0.  
Cool down - After cranking, the charger enters a mandatory 3-min-  
ute (180 second) cool down state. During this period, no settings can  
be changed. The buttons are ignored. The digital display indicates the  
remaining cool down time in seconds. It starts at 180 and counts down  
to 0. The 80A START LED blinks once every second. During the cool  
down period, no current is delivered to the battery. After 3 minutes, the  
80A START LED will stop blinking and will light continuously, indicating  
that another crank cycle can be started. The digital display will change  
from displaying the countdown back to displaying the battery voltage. The  
CHARGING LED will then be lit.  
12. OPERATINg INSTRUCTIONS  
OVERVIEw:  
Using this battery charger is very simple. First, connect the battery and AC  
power following the precautions listed in sections 6 and 7. Then select the  
appropriate BATTERY TYPE and CHARGE RATE for your battery. The  
charger will then do everything automatically. This section explains a few  
details.  
12.1 CHARgINg: If the charger does not detect a properly connected battery,  
the CHECK (red) LED will light continuously until such a battery is detect-  
ed. Charging will not begin while the CHECK LED is on. When charging  
begins, the CHARGING (yellow) LED will be lit.  
12.2 AUTOMATIC CHARgE: When the 2A, 12A or 30A charge rate is selected,  
the charger is set to perform an automatic charge. When an automatic  
charge is performed, the charger switches to the maintain mode (see  
below) automatically after the battery is charged.  
12.3 ABORTEd CHARgE: If charging can’t be completed normally, charg-  
ing will abort. When charging aborts, the charger’s output is shut off and  
the CHECK (red) LED and digital display will blink on and off (at opposite  
times). In that state, the charger ignores all buttons. To reset after an  
9 •  
aborted charge, either disconnect the battery or unplug the charger.  
12.4 dESULFATION MOdE: If a battery is left discharged for an extended  
period of time, it could become sulfated and not accept a normal charge. If  
the charger detects a sulfated battery, the charger will switch to a special  
mode of operation designed for such batteries. Activation of the special  
desulfation mode is indicated by the CHARGING (yellow) LED blinking.  
If successful, normal charging will resume after the battery is desulfated.  
The CHARGING (yellow) LED will then stop blinking and light continu-  
ously. Desulfation could take up to 10 hours. If desulfation fails, charging  
will abort and the CHECK (red) LED will blink.  
12.5 COMPLETION OF CHARgE: Charge completion is indicated by the  
CHARGED (green) LED. When lit, the charger has stopped charging and  
switched to the Maintain Mode of operation. If the 12V DEEP CYCLE  
battery type was selected for other charge types, the CHARGED (green)  
LED comes on when the battery is charged enough for normal use.  
12.6 MAINTAIN MOdE: When the CHARGED (green) LED is lit, the charger  
has started Maintain Mode. This mode of operation is also known as  
Float-Mode Monitoring. In this mode, the charger keeps the battery fully  
charged by delivering a small current, when necessary. The voltage  
is maintained at a level determined by the BATTERY TYPE selected.  
NOTE: For charge types other than DEEP CYCLE, the CHARGED LED  
might be lit before Maintain Mode is started.  
12.7 gENERAL CHARgINg NOTES: The charger is designed to control its  
cooling fan for efficient operation. Consequently, it is normal for the fan to  
start and stop when maintaining a fully charged battery. The fan does not  
run in Tester Mode.  
If the charge mode is changed after charging has started (by pressing the  
CHARGE RATE or BATTERY TYPE button), the charging process will  
restart.  
The voltage displayed during charging is the charging voltage and is usually  
higher than the battery’s resting voltage.  
10 •  
13. CHARgER CONTROLS  
STATUS  
CHARGED  
CHARGING  
CHECK  
Digital Display  
BATTERY%  
VOLTAGE  
DISPLAY MODE  
ALTERNATOR%  
12V REGULAR  
12V DEEP CYCLE  
12V AGM/GEL  
6V REGULAR  
BATTERY TYPE  
2A SLOW  
12A FAST  
30A RAPID  
80A START  
CHARGE RATE  
13.1 dISPLAY MOdE BUTTON  
Use this button to set the function of the digital display to one of the follow-  
ing:  
BATTERY %: The digital display shows an estimated charge percent of  
the battery connected to the charger battery clamps.  
VOLTAgE: The digital display shows the voltage at the charger battery  
clamps in DC volts.  
ALTERNATOR %: The digital display shows an estimated output per-  
centage of the vehicle’s charging system connected to the charger bat-  
tery clamps as compared to a properly functioning system.  
13.2 BATTERY TYPE BUTTON  
Use this button to set the type of battery to be charged to one of the fol-  
lowing:  
12V REgULAR: This battery type is usually used in cars, trucks, and  
motorcycles. These batteries have vent caps and are often marked “low  
maintenance” or “maintenance-free.”  
12V dEEP CYCLE: Deep cycle batteries are usually marked as “deep  
cycle” or “marine.” Deep cycle batteries are usually larger than the other  
types.  
12V AgM/gEL: AGM and Gel cell batteries have sealed cases without  
vent caps. Such batteries are often smaller than the other types.  
6V REgULAR: This battery type is usually used in antique and special-  
ized vehicles. The 6V REGULAR battery type is not selectable for batter-  
ies greater than 8.5V DC.  
With the exception of AGM and Gel cell batteries, all other battery types  
11 •  
may or may not have vent caps. Vent caps are located on top of the bat-  
tery and provide a means to add distilled water when needed. Batteries  
should be marked with their type. If charging a battery that is not marked,  
check the manual of the item that uses the battery.  
13.3 CHARgE RATE BUTTON  
Use this button to set the maximum charge rate to one of the following:  
2A SLOw CHARgE RATE: Intended for charging small batteries such as  
those commonly used in garden tractors, snow mobiles and motorcycles.  
The 2A rate is not intended to be used as a trickle charger for larger bat-  
teries.  
12A FAST and 30A RAPId CHARgE RATE: Use for charging automo-  
tive, marine, and deep cycle batteries. Not intended for industrial applica-  
tions.  
80A START: Provides 80 amps for cranking an engine with a weak or run  
down battery. Always use in combination with a battery.  
NOTE: To turn OFF the charger, unplug the power cord from the wall  
outlet.  
14. USINg THE BUILT-IN VOLT METER TO TEST BATTERY STATE OF  
CHARgE  
OVERVIEw  
This battery charger has a built-in volt meter to test your battery’s state  
of charge. The charger does not have a built in load tester. As such, a  
recently charged battery could have a temporarily high voltage due to  
what is known as “surface charge.” The voltage of such a battery will  
gradually drop during the period immediately after the charging system is  
disengaged. Consequently, the tester could display inconsistent values for  
such a battery. For a more accurate reading, the surface charge should be  
removed by temporarily creating a load on the battery, such as by turning  
on lights or other accessories.  
14.1 TESTINg SEqUENCE: There are four basic steps required to test the  
battery state of charge:  
1. Connect the charger battery clamps to the battery.  
2. Connect the charger power cord to a 120V AC 2-prong wall outlet.  
3. If necessary, press the BATTERY TYPE button until the correct type is  
indicated.  
4. Read the voltage on the digital display or press the display mode but-  
ton to set the tester to BATTERY % to read the voltage as a percent of  
charge.  
12 •  
14.2 TESTER ANd CHARgER: When first turned on, the 71225 operates only  
as a tester, not as a charger. To continue to use it as only a tester, avoid  
pressing the CHARGE RATE button. Selecting a charge rate activates the  
battery charger and deactivates the tester. Pressing the CHARGE RATE but-  
ton when the 80A Start LED is lit (except during the 180 second cool down)  
will shut off the charger and activate the tester.  
14.3 POwER-UP IdLE TIME LIMIT: If no button is pressed within 15 minutes  
after the battery is first powered up, the charger will automatically switch  
from tester to charger, if a battery is connected. In that case, the battery  
will be set for the 2A charge rate and 12V REGULAR battery type.  
14.4 TESTER wITHOUT TIME LIMIT: If either the DISPLAY MODE or BAT-  
TERY TYPE button is pressed within the first ten minutes after the battery  
is powered up, the unit will remain a tester (not a charger) indefinitely,  
unless a charge rate is selected.  
14.5 TESTINg AFTER CHARgINg: After the unit has been changed from  
tester to charger (by selecting a charge rate), it remains a charger. To  
change the battery back to a tester, press the CHARGE RATE switch until  
all charge rate LEDs are off.  
14.6 TESTER STATUS LEds: When the 71225 is operating as a battery tester,  
the status LEDs light under the following conditions:  
The CHARGED (green) LED will light if a charged battery is tested.  
The CHARGING (yellow) LED does not light in the battery test mode.  
The CHECK (red) LED lights unless a properly connected battery is de-  
tected.  
When the tester display mode is set to VOLTAGE, the CHARGED and  
CHARGING LEDs won’t light.  
14.7 INITIAL PERCENT CALCULATION: When a battery % is calculated for  
the first time after connecting a battery, the digital display will show three  
dashes (“---”) for a period as long as several seconds while the tester  
analyzes the battery.  
15. USINg THE BUILT-IN ALTERNATOR TO TEST ALTERNATOR  
OUTPUT  
This battery charger has a built-in alternator tester that displays an esti-  
mate of the alternator’s relative output compared to normal alternators.  
The Alternator % values displayed should be taken as general reference,  
not precise diagnosis. The alternator tester functions the same as the  
built-in volt meter (see previous section of this manual for details) with a  
few differences.  
13 •  
15.1 TESTINg SEqUENCE  
There are three basic steps required to use the 71225 as an alternator  
tester.  
Connect the charger battery clamps to the battery or charging system.  
Connect the charger power cord to a 120V AC wall outlet.  
Start the vehicle and turn on the vehicle’s headlights. Read the voltage  
on the digital display or press the DISPLAY MODE button to set the tester  
to ALTERNATOR % to read the voltage as a percent of charge.  
15.2 ALTERNATOR TESTINg NOTES  
The DISPLAY MODE cannot be set to ALTERNATOR % during charging.  
16. BATTERY PERCENT ANd CHARgE TIME  
This charger adjusts the charging time in order to charge the battery com-  
pletely, efficiently and safely. The microprocessor automatically makes the  
necessary decisions. However, this section includes guidelines that can be  
used to estimate charging times.  
The duration of the charging process depends on three factors:  
16.1 Battery State – If a battery has only been slightly discharged, it can be  
charged in less than a few hours. The same battery could take up to 10  
hours if very weak. The battery state can be estimated by using the built-in  
tester. The lower the reading, the longer charging will take.  
16.2 Battery Rating – A higher rated battery will take longer to charge than  
a lower rated battery under the same conditions. A battery is rated in  
ampere-hours (AH), reserve capacity (RC) and cold cranking amps (CCA).  
The lower the rating, the quicker the battery will charge.  
16.3 Charge Rate – The charge rate is measured in amps. This charger pro-  
vides charge rates of 2A, 12A and 30A. The 80A rate is for engine start  
only. The 2A rate is for charging smaller batteries such as those used for  
motorcycles and garden tractors. Such batteries should not be charged  
using the 12A or 30A rate. The 12A and 30A rates are for charging larger  
batteries. In the 30A mode, the charger begins at a low charge rate and  
increases the charge rate if it is determined that the battery can accept the  
higher rate. All charging modes will decrease the charge rate as the bat-  
tery approaches maximum charge. After the charging process has started,  
the digital display can be used to determine charging progress by select-  
ing the BATTERY % mode.  
14 •  
16.4 There are some important facts to keep in mind when charging a  
battery:  
When the display indicates 77% charged, the battery has been charged  
enough to start most vehicles and has already been charged as much as  
by many other battery chargers.  
When the display indicates 85% charged, the battery has already been  
charged at least as much as by most other battery chargers.  
The battery % shown in tester mode is an estimate based on the battery  
voltage.  
The battery % shown in charger mode is an estimate of the relative  
charge in the battery compared to the charge it should have if the charg-  
ing process is allowed to complete and can be used to estimate the rela-  
tive charge time. The lower the % shown, the longer the charge time for a  
given battery.  
The battery % shown in charger mode is an indication of the relative  
progress of the charging process. The higher the battery % displayed, the  
less charge time remains.  
The more a battery is discharged, the faster it absorbs charge from a  
charger. That means that the battery % increases faster at the beginning  
of the charging process than at the end. In other words, it takes longer for  
the battery to absorb the last few percents of charge than the first several  
percents.  
17. CHARgINg TIPS  
Read this entire manual before using your charger. The tips below serve  
only as a guide for specific situations.  
17.1 If your vehicle won’t start: You don’t need to fully charge a battery to  
start your vehicle. If the charger won’t start your vehicle using the 80A  
START rate, try charging the battery using the 30A rate for 10 or 15 min-  
utes. That should charge the battery enough to allow the 80A START rate  
to start the vehicle. If operating the vehicle continuously for an extended  
period (such as a long drive), the vehicle could charge the battery back to  
normal during that period. If the vehicle will only be operated for a short  
period (short drive), the battery might need to be charged again before it  
could start the vehicle again.  
15 •  
17.2 Reviving your battery: If you only wish to charge your battery enough to  
operate the vehicle, you don’t need to wait for the entire charging process.  
When the charger displays a battery % of 77 or more, the battery has usu-  
ally been charged enough for the vehicle to start and operate normally.  
17.3 Completing an interrupted charge: If the charging process has been  
interrupted and restarted after the charger displays a battery % of 85 or  
more, the charger could go straight to Maintain Mode. However, if the  
original charge was started using 30A, the charge can often be completed  
using the 2A rate.  
18. MAINTENANCE INSTRUCTIONS  
18.1 Before performing maintenance, unplug and disconnect battery charger  
(see sections 6.7 and 7.6).  
18.2 After use, use a dry cloth to wipe all battery corrosion and other dirt or oil  
from terminals, cords, and the charger case.  
18.3 Servicing does not require opening unit, as there are no user-serviceable  
parts.  
19. STORAgE INSTRUCTIONS  
19.1 Store charger unplugged, in an upright condition. Cord will still conduct  
electricity until it is unplugged from outlet.  
19.2 Store inside, in a dry, cool place (unless you’re using an on-board Marine  
Charger ).  
19.3 Do not store clips on handle, clipped together, on or around metal, or  
clipped to cables.  
16 •  
20. TROUBLESHOOTINg  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
The battery is connected The charger is in tester  
Press the CHARGE  
RATE button to activate  
charging and select a  
charge rate.  
and the charger is on,  
but isn’t charging.  
mode, not charger  
mode.  
Indicator lights are lit in  
an erratic manner not  
explained in the “Operat-  
ing Instructions” section.  
You might have acciden-  
tally activated a special  
diagnostic mode.  
Make sure nothing is  
touching the control  
panel, then unplug the  
charger and plug it in  
again.  
The charger may be  
defective.  
Return to place of pur-  
chase for replacement.  
The CHECK (red) LED  
always flashes before  
the battery is completely  
charged.  
The incorrect BATTERY  
TYPE may have been  
selected.  
Reset the charger by  
unplugging it and plug-  
ging it back in place or  
briefly disconnecting  
the negative battery  
clip. Select the desired  
CHARGE RATE and  
BATTERY TYPE again,  
if necessary.  
This will happen if the  
battery did not reach full  
charge within 24 hours.  
May be due to a very  
large battery or a bank  
of batteries requiring  
more power than a 30/12  
Amp charger can deliver  
within 24 hours. The bat-  
tery may also be faulty.  
Engine crank time is less Starter motor may be  
Charge the battery at  
the 30A rate for 10 to 15  
minutes then crank the  
engine.  
than specified.  
drawing more than 80  
Amps.  
The green CHARGED  
LED lights a few minutes  
after connecting to the  
battery.  
The battery may be  
fully charged or recently  
charged, leaving the bat-  
tery voltage high enough  
to appear to be fully  
charged.  
If the battery is in a ve-  
hicle, turn the headlights  
on for a few minutes  
to reduce the battery  
voltage and try charging  
again.  
The incorrect BATTERY  
TYPE may have been  
selected.  
Reset the charger by un-  
plugging it or briefly dis-  
connecting the negative  
battery clip. Select the  
desired CHARGE RATE  
and BATTERY TYPE  
again, if necessary.  
17 •  
18 •  

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