Schumacher Battery Charger 10000A User Guide

OWNER’S MANUAL  
Model 10000A  
For 6 and 12-Volt Batteries  
SpeedCharge  
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2C H A R G E 40C H A R G E  
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S T A R T  
C H A R G E  
15  
100  
FullyAutomatic  
Microprocessor Controlled  
Battery Charger with  
Engine Starter plus  
Battery Tester  
CAUTION:  
Read all Safety Rules and Operating Instructions,  
and follow them with each use of this product.  
Schumacher Electric Corporation  
Mount Prospect, IL 60056 U.S.A.  
Send Warranty Product Repairs to:  
Customer Service Returns  
P.O. Box 280,1025 E. Thompson, Hoopeston, IL 60942-0280  
Questions? Call Customer Service: 1-800-621-5485  
0099000530/0605  
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IMPORTANT SAFETY INSTRUCTIONS  
WARNING – RISK OF EXPLOSIVE GASES  
WORKING IN VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BAT-  
TERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY  
OPERATION. FOR THIS REASON, IT IS OF UTMOST IMPORTANCE THAT  
EACH TIME BEFORE USING YOUR CHARGER, YOU READ THIS MANUAL  
AND FOLLOW THE INSTRUCTIONS EXACTLY.  
To reduce risk of battery explosion, follow these instructions and those published by  
battery manufacturer and manufacturer of any equipment you intend to use in vicinity  
of battery. Review cautionary marking on these products and on engine.  
SAVE THESE INSTRUCTIONS  
WARNING: Handling the cord on this  
product or cords associated with  
accessories sold with this product, will  
expose you to lead, a chemical known  
to the State of California to cause  
cancer and birth defects or other  
reproductive harm. Wash hands after  
handling.  
• To reduce risk of electrical shock,  
unplug the charger from the outlet  
before attempting any maintenance  
or cleaning.  
• Always charge battery in a well-  
ventilated area.  
WARNING: Battery chargers get hot  
during operation and must have  
proper ventilation. Air needs to flow  
around entire charger. Do not set  
charger on flammable materials like  
carpeting, upholstery, paper, card-  
board, etc. Charger may damage  
leather and melt plastic and rubber.  
• Read all instructions and cautions  
printed on the battery charger,  
battery, and vehicle or equipment  
using battery.  
• Use charger only on lead-acid type  
rechargeable batteries, such as those  
used in cars, trucks, tractors, air-  
planes, vans, RV’s, trolling motors,  
etc. This charger is not intended to  
supply power to a low voltage  
HELP US HELP YOU ——  
Remember:  
Place charger as far away from the  
battery being charged as the charger  
cables will permit.  
electrical system other than in a  
starter-motor application.  
Never use charger for charging dry  
cell batteries that are commonly used  
with home appliances like radios,  
stereos, remote controls, etc. These  
batteries may burst and cause  
personal injury.  
Do not expose charger to rain or snow.  
Never charge a frozen battery. If battery  
fluid (electrolyte) becomes frozen, bring  
battery into a warm area to thaw before  
you begin charging.  
Never allow battery acid to drip on  
charger when reading specific gravity or  
filling battery.  
• Do not disassemble charger. Take it  
to a qualified service professional if  
service or repair is required. Incorrect  
assembly may result in fire or  
electrical shock.  
Never set a battery on top of the  
charger.  
3
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Never place charger directly above  
battery being charged. The gases from  
the battery will corrode and damage the  
charger.  
Be sure to position the charger power  
cord to prevent it from being stepped  
on, tripped over, or damaged.  
Never pull out the plug by the cord  
when unplugging the charger. Pulling  
on the cord may cause damage to the  
cord or the plug.  
Never touch the battery clamps together  
when the charger is on. You could  
cause a spark.  
Never operate charger if it has received  
a hard blow, been dropped, or otherwise  
damaged. Take it to a qualified profes-  
sional for inspection and repair.  
Do not operate the charger if it has a  
damaged power cord or plug. Have the  
cord replaced.  
PERSONAL SAFETY PRECAUTIONS  
Wear complete eye and clothing  
protection when working with lead-  
acid batteries.  
Remove all personal metal items  
from your body such as rings,  
bracelets, necklaces and watches,  
while working with a lead-acid battery.  
A battery can produce a short circuit  
current high enough to weld a ring (or  
the like) to metal, causing a severe  
burn.  
Make sure that someone is within  
range of your voice to come to your  
aid if needed while you work with or  
are near a lead-acid battery.  
Have plenty of fresh water and  
soap nearby for use in case battery  
acid contacts your eyes, skin, or  
clothing. If this happens, wash  
immediately with soap and water.  
Then get medical attention.  
Take care not to drop any metal tool  
or metal object onto the battery. This  
may spark or short circuit the battery  
or another electrical device that may  
cause an explosion.  
Always operate the battery charger in  
an open, well-ventilated area.  
Avoid touching your eyes while  
working with a battery. Acid particles  
(corrosion) may get into your eyes. If  
this occurs, flush eyes immediately  
with running cold water for at least 10  
minutes. Then immediately get  
medical attention.  
Never smoke or allow a spark or  
flame in the vicinity of the battery or  
engine. Batteries generate explosive  
gases.  
Neutralize any acid spills thoroughly  
with baking soda before attempting to  
clean up.  
Never charge a frozen battery.  
4
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BEFORE USING YOUR BATTERY CHARGER  
It is important to understand the charger’s requirements. This section explains the  
charger’s electrical requirements and how to prepare a battery for charging.  
PLUGGING IT IN  
extension cord, please make sure that  
you follow these guidelines:  
• Make sure that pins on plug of  
extension cord are the same number,  
size, and shape as those of plug on  
charger.  
Your charger requires a 120V AC  
receptacle installed according to all local  
codes and ordinances.  
• Check that the extension cord is  
properly wired and in good electrical  
condition.  
• Make sure that the wire size is large  
enough for its length and for the AC  
ampere rating, as specified in the  
chart below.  
MINIMUM RECOMMENDED EXTENSION CORD  
USINGANEXTENSIONCORD  
The use of an extension cord is not  
recommended. If you must use an  
Length of Cord, in Feet  
25 50 100 150  
18 16 12 10  
AWG* Size of Cord  
*AWG=American Wire Gauge  
PREPARING YOUR BATTERY TO BE CHARGED  
It is important that you read and follow these guidelines while you are preparing to  
charge the battery.  
• Make sure that you have a 12 volt or 6  
volt lead-acid battery. Determine  
voltage of battery by referring to  
vehicle owner’s manual or the battery  
markings. Be sure to set the charger  
to the 6V or 12V mode accordingly.  
Charge battery initially at charger’s  
lowest rate.  
• Clean the battery terminals. Be  
careful to keep corrosion from getting  
in or around your eyes.  
• Wear safety glasses. See additional  
“Personal Safety Precautions” on  
page 4.  
• If required, for batteries with remov-  
able vent caps, add distilled water to  
each cell until the battery acid  
reaches the level recommended by  
the manufacturer. This will help purge  
excessive gases from the cells. Be  
careful not to overfill. If you have a  
sealed battery with non-removable  
vent caps, no action is necessary.  
• Take time to read all of the battery  
manufacturer’s specific precautions,  
such as removing or not removing  
vent caps while charging, and  
recommended rates of charge.  
• Be sure that the area around the  
battery is well ventilated while it is  
being charged. Gas can be forcefully  
blown away by using a piece of  
cardboard or other nonmetallic  
material as a fan.  
• If it is necessary to remove the battery  
from the vehicle to charge it, always  
remove the grounded terminal from  
the battery first. Turn off all vehicle  
accessories to avoid sparks from  
occurring.  
NOTE: A marine (boat) battery  
installed in a boat must be removed  
and charged on shore.  
5
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OPERATING INSTRUCTIONS  
IMPORTANT: Follow all safety instructions and precautions when charging your  
battery. Wear complete eye protection and clothing protection. Charge your battery in  
a well-ventilated area.  
CHARGING BATTERY IN THE  
VEHICLE:  
heavy, unpainted metal part of the  
chassis or engine block, away from  
the battery (see figure above). DO  
NOT connect clamp to negative  
battery post, carburetor, fuel line or  
sheet metal part.  
1. Avoid personal injury by keeping  
clear of fan blades, belts, pulleys and  
other engine parts.  
2. Avoid damaging the Charger by  
keeping the power cord and output  
cords away from the hood, door or  
moving engine parts.  
Connectingtoapositive-grounded  
system: Connect the black (NEGA-  
TIVE) output clamp to the NEGA-  
TIVE post of the battery. Rock and  
twist the clamp back and forth to be  
sure a solid electrical connection is  
made. Then connect the red (POSI-  
TIVE) output clamp to a heavy,  
unpainted metal part of the chassis  
or engine block, away from the  
battery. DO NOT connect clamp to  
positive battery post, carburetor, fuel  
line or sheet metal part.  
3. Note the polarity of the battery posts  
by checking the identification marks  
on the battery: POSITIVE (POS, P or  
+) and NEGATIVE (NEG, N or -). The  
positive post is usually larger than  
the negative post.  
4. Identify which battery post is  
grounded or connected to the  
chassis. THIS IS NORMALLY THE  
NEGATIVE POST.  
6. Plug power cord into an AC outlet.  
The charger will be set to the default  
state of 2A charge rate and REGU-  
LAR battery type (tester).  
7. Press the appropriate control buttons  
to select the desired charge rate and  
battery type. Within a few seconds,  
the CHARGING (yellow) LED should  
light and the charging process should  
start. If the CHECK (red) LED is on,  
check for correct cable connections.  
8. To disconnect the Charger, unplug its  
power cord before attempting to  
disconnect the output clamps. Then,  
standing away from the battery,  
remove the output clamp from the  
chassis or engine block. Finally,  
remove the output clamp from the  
battery post.  
NEGATIVE GROUNDED SYSTEM  
5. Connecting to a negative-  
grounded system: Connect the red  
(POSITIVE) output clamp to the  
POSITIVE post of the battery. Rock  
and twist the clamp back and forth to  
be sure a solid electrical connection  
is made. Then connect the black  
(NEGATIVE) output clamp to a  
9. Clean and store the Charger in a dry  
location.  
6
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CHARGINGBATTERYREMOVEDFROMTHEVEHICLE:  
NEGATIVE  
POSITIVE  
Y CHARGER  
BATTERY  
POWER  
CORD  
TO  
GROUNDED  
POWER  
OUTLET  
1. Note the polarity of the battery posts  
by checking the identification marks  
on the battery: POSITIVE (POS, P or  
+) and NEGATIVE (NEG, N or -). The  
positive post is usually larger than  
the negative post.  
NEGATIVE battery post. Finally,  
remove the output clamp from the  
POSITIVE battery post.  
8. Clean and store the charger in a dry  
location.  
USING ENGINE START  
2. Attach at least a 24-inch-long, 6-  
gauge (AWG), insulated battery  
cable to NEGATIVE (NEG, N or -)  
battery post. Rock and twist the  
clamp back and forth to be sure a  
solid electrical connection is made.  
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 instruc-  
tions and precautions when charging  
your battery. Wear complete eye  
protection and clothing protection.  
Charge your battery in a well-ventilated  
area.  
3. Connect the red (POSITIVE) output  
clamp to the POSITIVE battery post.  
Rock and twist the clamp back and  
forth to be sure a solid electrical  
connection is made.  
4. Position yourself as far away from  
the battery as possible, and then  
connect the black (NEGATIVE)  
output clamp to the free end of the  
cable.  
IMPORTANT: Using the ENGINE  
START feature WITHOUT a battery  
installed in the vehicle could cause  
damage to the vehicle’s electrical  
system.  
5. Plug the power cord into an AC  
outlet. The charger will be set to the  
default state of 2A charge rate and  
REGULAR battery type (tester).  
1. With the charger plugged in and  
connected to the battery of the  
vehicle, set the CHARGE RATE to  
100A START. Only the 100A START,  
CHARGING LED’s and BATTERY  
TYPE should be lit.  
6. Press the appropriate control buttons  
to select the desired charge rate and  
battery type. Within a few seconds,  
the CHARGING (yellow) LED should  
light and the charging process should  
start. If the CHECK (red) LED is on,  
check for correct cable connections.  
2. Crank the engine for no more than 8  
seconds. If engine does not start,  
wait 2 minutes before cranking again.  
3. After the engine starts, unplug the  
power cord before disconnecting the  
output clamps from the battery.  
7. To disconnect the Charger, unplug  
its power cord before attempting to  
disconnect the charger clamps.  
4. Clean and store the charger in a dry  
location.  
Then, standing away from the battery,  
remove the output clamp from the  
7
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CHARGER CONTROL  
LEDs  
SpeedCharge  
Digital  
LED  
Stattuuss LLEDs  
Switch Buttons  
10000A CONTROL PANEL  
DISPLAYMODESWITCH  
12V REGULAR: This is the type of  
battery usually used in cars, trucks,  
and motorcycles. These batteries  
have vent caps and are often marked  
“low maintenance” or “maintenance-  
free”.  
12VDEEPCYCLE:Deepcycle  
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 is the type of  
battery usually used in antique and  
some specialized vehicles.  
Use this switch to set the function of the  
digital LED to one of the following.  
BATTERY %: The digital LED displays  
an estimate of the percent of charge  
of the battery connected to the  
charger battery clamps.  
VOLTAGE: The digital LED displays  
the voltage at the charger battery  
clamps in DC volts.  
CHARGERATESWITCH  
Use this switch button to set the charge  
rate to one of the following.  
• 2ACHARGERATE:Intendedfor  
charging small batteries such as  
those commonly used in garden  
tractors, snow mobiles and motor-  
cycles. The 2A rate is not intended to  
be used as a trickle charger for larger  
batteries.  
15A or40ACHARGERATE:Usefor  
charging automotive batteries,  
marine batteries, and deep cycle  
batteries. Not intended for industrial  
applications.  
With the exception of AGM and gel cell  
batteries, all other battery types may or  
may not have vent caps. Vent caps are  
located on top of the battery 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. If the battery  
type is unknown, use the REGULAR  
setting. Make sure the battery complies  
with the safety instructions on page 3.  
100A START: Provides 100 amps for  
cranking an engine with a weak or  
run down battery. Always use in  
combination with a battery.  
BATTERYTYPESWITCH  
Use this switch button to set the type of  
battery to be charged to one of the  
following.  
8
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CONTROL PANEL GUIDE  
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USING THE BUILT-IN BATTERY TESTER  
OVERVIEW  
TESTINGAFTERCHARGING  
This battery charger has a built-in  
battery tester that displays either an  
accurate battery voltage or an estimate  
of the battery’s relative charge based on  
the battery voltage and the Battery  
Council International scale.  
After the unit has been changed from  
tester to charger (by selecting a charge  
rate), it remains a charger as long as it  
has power. Disconnect and reconnect  
the power to change the unit back to a  
tester.  
TESTING SEQUENCE  
TESTERSTATUSLEDs  
There are four basic steps required to  
use the 10000A as a battery tester.  
1. Connect the charger battery clamps to  
the battery. Be sure to follow all of the  
precautions listed under “OPERATING  
INSTRUCTIONS”.  
2. Connect the charger power cord to a  
120 VAC outlet. Again, be sure to follow  
all of the precautions listed under “OP-  
ERATINGINSTRUCTIONS”.  
When the 10000A 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.  
3. If necessary, press the Battery Type  
button until the correct type is indi-  
cated.  
• When the tester display mode is set  
to voltage, none of the Status LEDs  
light.  
4. Read the voltage on the digital LED or  
press the display mode button to set  
the tester to “Battery %” and read the  
battery percent.  
INITIALPERCENTCALCULATION  
When a battery % is calculated for the  
first time after connecting a battery, the  
digital LED will show two dashes (“--”)  
for a period as long as several seconds  
while the tester analyzes the battery.  
TESTER AND CHARGER  
When first turned on, the 10000A  
operates only as a tester, not as a  
charger. To continue to use it as only a  
tester, avoid pressing the CHARGE  
RATE switch button. Selecting a charge  
rate activates the battery charger and  
deactivates the tester.  
NOTES FOR TESTING BATTERY %  
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.  
POWER-UPIDLETIMELIMIT  
If no switch button is pressed within ten  
minutes after the unit is first powered  
up, the unit will automatically switch  
from tester to charger, if a battery is  
connected. In that case, the unit will be  
set for the 2A charge rate and 12V  
REGULAR battery type.  
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.  
TESTER WITHOUT TIME LIMIT  
If either the DISPLAY MODE or BAT-  
TERY TYPE button is pressed within the  
first ten minutes after the unit is  
powered up, the unit will remain a tester  
(not a charger) indefinitely, unless a  
charge rate is selected.  
The battery % ranges from 0 to 100.  
The battery tester is only designed to  
test batteries. Testing a device with a  
rapidly changing voltage could yield  
unexpected or inaccurate results.  
10  
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USING YOUR ENGINE STARTER  
OVERVIEW  
2. Cranking - When cranking is  
detected, the charger will automati-  
cally deliver up to its maximum  
output (at least 100A) 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.  
The 10000A has an engine start  
function that can be used to jump start  
your vehicle if the battery is low by  
providing 100 amps of current to assist  
engine cranking.  
STARTINGSEQUENCE  
There are a few basic steps involved  
when using the engine start function.  
1. Connect the charger battery clamps  
to the battery or charging system. Be  
sure to follow all of the precautions  
listed under “OPERATING INSTRUC-  
TIONS”.  
3. Cool Down - After cranking, the unit  
enters a mandatory 2-minute (120  
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  
120 and counts down to 0. The 100A  
START LED blinks once every  
2. Connect the charger power cord to a  
120 VAC outlet. Again, be sure to  
follow all of the precautions listed  
under “OPERATING INSTRUC-  
TIONS”.  
second. During the cool down period,  
the charger delivers charge at a rate  
of 20A and the CHARGING LED is lit.  
After 2 minutes, the 100A START  
LED will stop blinking and will light  
continuously, indicating that another  
crank cycle can be started. The  
digital LED will change from display-  
ing the countdown back to displaying  
the battery voltage.  
3. Press the CHARGE RATE button  
until the 100A START indicator is lit.  
4. Crank the engine until it starts or 5  
seconds passes.  
5. If the engine did not start, wait for the  
charger to cool then repeat step 4.  
During the starting sequence listed  
above, the charger is set to one of three  
states.  
ENGINE STARTING NOTES:  
• If the battery is disconnected during  
the cool down period, the charger will  
reset.  
1. Wait for cranking - The charger  
waits until the engine is actually  
being cranked before delivering 100  
amps for engine start. The charger  
delivers charge at a rate of 20 amps  
while waiting and will reset if the  
engine is not cranked within 5  
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).  
11  
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USING YOUR BATTERY CHARGER  
OVERVIEW  
and light continuously. Desulfation  
could take up to 10 hours. If desulfation  
fails, charging will be aborted and the  
CHECK (red) LED will blink.  
Using this battery charger is very  
simple. First, connect the battery and AC  
power following the precautions listed  
under “OPERATING INSTRUCTIONS”.  
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.  
COMPLETION OF CHARGING: Charge  
completion is indicated by the  
CHARGED (green) LED; when lit, the  
charger has stopped charging and  
switched to the Maintain Mode of  
operation.  
CHARGING: If the charger does not  
detect a properly connected battery, the  
CHECK (red) LED will light continuously  
until such a battery is detected. Charg-  
ing will not begin while the CHECK light  
is on. When charging begins, the  
CHARGING LED will be lit.  
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 main-  
tained at a level determined by the  
BATTERY TYPE selected.  
AUTOMATIC SHUT OFF: When the 2A,  
15A or 40A charge rate is selected, the  
charger is set to perform an automatic  
charge. When an automatic charge is  
performed, the charger stops charging  
automatically after the battery is  
charged.  
GENERAL CHARGING NOTES:  
The unit 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.  
ABORTED CHARGE: If charging can’t  
be completed normally, charging will be  
aborted. When charging is aborted, the  
charger’s output is shut off and the red  
CHECK LED and digital LED blink on  
and off (at opposite times). In that state,  
the charger ignores all buttons. To reset  
from after an aborted charge, either  
disconnect the battery or unplug the  
charger.  
If the charge mode is changed after  
charging has started (by pressing the  
CHARGE RATE or BATTERYTYPE  
button), the charging process will be  
restarted.  
The voltage displayed during charging is  
the charging voltage and usually will be  
higher than the battery’s resting voltage.  
DESULFATION MODE: If a battery is left  
discharged for an extended period, 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 spe-  
cial desulfation mode is indicated by  
blinking the CHARGING LED. If suc-  
cessful, normal charging will resume  
after the battery is desulfated. The  
If the 6V REGULAR battery type has  
been selected, and the battery voltage  
exceeds 8.5 VDC, the charging process  
will be aborted (see ABORTED  
CHARGE above). The charger will not  
charge a 12V battery if “6V REGULAR  
has been selected.  
CHARGING LED will then stop blinking  
12  
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CHARGING TIPS  
Read this entire manual before using your charger. The tips below serve only as a  
guide for specific situations.  
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 100A START rate,  
try charging the battery using the 40A  
rate for 10 or 15 minutes. That should  
charge the battery enough to allow the  
100A START rate to start the vehicle. If  
the vehicle will then be operated  
Reviving your battery: If you only wish  
to charge your battery enough to  
operate your vehicle, you don’t need to  
wait for the entire charging process to  
be completed. When the charger  
displays a battery % of 77 or more (see  
page 14), the battery has usually been  
charged enough for the vehicle to start  
and operate normally.  
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.  
Completing an interrupted charge: If  
the charging process has been inter-  
rupted and restarted after the charger  
displays a battery % of 85 or more, the  
charger could go straight to Maintain  
Mode (see top of this page). However, if  
the original charge was started using  
40A, the charge can often be completed  
using the 2A rate.  
13  
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BATTERY PERCENT AND CHARGE TIME  
This charger adjusts the charging time  
There are some important facts to keep  
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.  
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.  
The duration of the charging process  
depends on three factors:  
• When the display indicates 85%  
charged, the battery has already been  
charged at least as much as by most  
other battery chargers.  
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 (see page 10). The lower the  
reading the longer charging will take.  
• The battery % shown in tester mode  
is an estimate based on the battery  
voltage and the Battery Council  
International scale. 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 charging process is  
allowed to complete.  
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 be charged.  
• The battery % shown in tester mode  
can be used to estimate the relative  
charge time.The lower the % shown,  
the longer the charge time for a given  
battery.  
3. Charge rate – The charge rate is  
measured in amps. This charger  
provides charge rates of 2A, 15A and  
40A. The 100A 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 15A or 40A  
rate. The 15A and 40A rates are for  
charging larger batteries. In the 40A  
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  
• 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 percent  
of charge than the first several  
percent.  
decrease the charge rate as the  
battery approaches maximum  
charge. After the charging process  
has started, the digital display can  
be used to determine charging  
progress by selecting the BATTERY  
% mode.  
14  
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TROUBLESHOOTING  
Performance problems often can be corrected by the user. Please read through this  
chart for a possible solution to common problems.  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
The battery is connected  
and the charger is on,  
but it isn’t charging.  
The charger is in tester  
mode, not charger mode. button to activate charging  
and select a charge rate.  
Press the CHARGE RATE  
Indicator lights are lit in an You might have  
Make sure nothing is  
touching the control panel,  
erratic manner not  
explained in the “Using  
Your Battery Charger”  
section.  
accidentally activated a  
special diagnostic mode. then unplug the unit and  
plug it in again.  
The charger may be  
defective.  
Return to place of purchase  
for replacement.  
The CHECK (red) light  
The incorrect battery type  
always flashes before the may have been selected.  
battery is completely  
charged.  
This will happen if the  
Reset the charger by un-  
plugging it or briefly  
disconnecting it or briefly  
disconnecting the negative  
battery did not reach full  
charge within 24 hours.  
May be due to a very  
large battery or a bank of battery clip. Select the  
batteries requiring more desired charge rate and  
power than a 40/15 Amp  
battery type again, if  
charger can deliver within necessary.  
24 hours. The battery may  
also be faulty.  
Engine crank time is less Starter motor may be  
Charge the battery at the  
than specified.  
drawing more than 100  
Amps.  
40A rate for 10 to 15  
minutes then crank the  
engine.  
The green CHARGED  
light turns on a few  
minutes after connecting  
to the battery.  
The battery may be fully  
charged or recently  
charged, leaving the  
battery voltage high  
enough to appear to be  
fully charged.  
If the battery is in a vehicle,  
turn the headlights on for a  
few minutes to reduce the  
battery voltage and try  
charging again.  
The incorrect battery type Reset the charger by un-  
may have been selected. plugging it or briefly  
disconnecting the negative  
battery clip. Select the  
desired charge rate and  
battery type again, if  
necessary.  
15  
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MAINTENANCE AND CARE  
A minimal amount of care can keep your battery charger working properly for years.  
1. Clean the clamps each time you are finished charging. Wipe off any battery fluid  
that may have come in contact with the clamps to prevent corrosion.  
2. Coil the input and output cords neatly when storing the charger. This will help  
prevent accidental damage to the cords and charger.  
3. Occasional cleaning of the case of the charger with a soft cloth will keep the finish  
shiny and help prevent corrosion.  
LIMITED WARRANTY  
SCHUMACHER ELECTRIC CORPORATION,  
801 BUSINESS CENTER DRIVE,  
MOUNT PROSPECT, ILLINOIS 60056-2179  
MAKES THIS LIMITED WARRANTY TO THE ORIGINAL PURCHASER AT RETAIL  
OF THIS PRODUCT. THIS LIMITED WARRANTY IS NOT TRANSFERABLE.  
Schumacher Electric Corporation warrants this battery charger for five years from  
date of purchase at retail against defective material or workmanship. If such should  
occur, the unit will be repaired or replaced at the option of the manufacturer. It is the  
obligation of the purchaser to forward the unit together with the original receipt,  
transportation and/or mailing charges prepaid to the manufacturer or its authorized  
representative.  
This limited warranty is void if the product is misused, subjected to careless  
handling, or repaired by anyone other than the manufacturer or its authorized  
representative.  
The manufacturer makes no warranty other than this limited warranty and expressly  
excludes any implied warranty including any warranty for consequential damages.  
THIS IS THE ONLY EXPRESS LIMITED WARRANTY AND THE MANUFACTURER  
NEITHER ASSUMES NOR AUTHORIZES ANYONE TO ASSUME OR MAKE ANY  
OTHER OBLIGATION TOWARDS THE PRODUCT OTHER THAN THIS EXPRESS  
LIMITED WARRANTY. THE MANUFACTURER MAKES NO WARRANTY OF  
MERCHANTABILITY OR FITNESS FOR PURPOSE OF THIS PRODUCT AND  
EXPRESSLY EXCLUDES SUCH FROM THIS LIMITED WARRANTY.  
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDEN-  
TAL OR CONSEQUENTIAL DAMAGES OR LENGTH OF IMPLIED WARRANTY SO  
THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO  
HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE.  
WARRANTY VALIDATION: The enclosed “Warranty Validation Card” must be  
completed and mailed within 10 days of product purchase to activate this limited  
warranty.  
16  
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