schulink SC1366 User manual

0099001933-00
SC1366
3A Wireless Charger /Maintainer
3A Cargador
OWNERS MANUAL
PLEASE SAVE THIS OWNERS MANUAL AND READ BEFORE EACH USE.
This manual will explain how to use the charger safely and effectively. Please
read and follow these instructions and precautions carefully.

CONTENTS
IMPORTANT SAFETY INSTRUCTIONS..........................................................................................4
PERSONAL SAFETY PRECAUTIONS ............................................................................................4
PREPARING TO CHARGE ..............................................................................................................5
CHARGER LOCATION ....................................................................................................................5
DC CONNECTION PRECAUTIONS................................................................................................5
FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE......................................5
FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE .............................................6
GROUNDING AND AC POWER CORD CONNECTIONS...............................................................6
ASSEMBLY INSTRUCTIONS ..........................................................................................................6
FEATURES.......................................................................................................................................6
CONTROL PANEL............................................................................................................................7
INSTALLING THE APP AND REGISTERING YOUR CHARGER ....................................................7
USING THE APP TO CONTROL THE CHARGER ..........................................................................8
OPERATING THE CHARGER .........................................................................................................9
DISPLAY MESSAGES ...................................................................................................................12
MAINTENANCE AND CARE..........................................................................................................12
TROUBLESHOOTING ...................................................................................................................12
BEFORE RETURNING FOR REPAIRS .........................................................................................13
SPECIFICATIONS..........................................................................................................................13
REPLACEMENT PARTS ...............................................................................................................13

• 4 •
1. IMPORTANT SAFETY INSTRUCTIONS
PLEASE SAVE THIS OWNERS MANUAL
AND READ BEFORE EACH USE.
This manual will explain how to use the
charger safely and effectively. Please
read and follow these instructions and
precautions carefully.
NOTE: The charger itself is a stand-alone
device and will function as a battery charger/
maintainer without an internet connection.
However, without a Cloud connection, the
App will not reect the charging progress.
1.1 SAVE THESE INSTRUCTIONS –
This manual contains important safety
and operating instructions.
1.2 Keep out of reach of children.
1.3 Do not expose the charger to rain or snow.
1.4 Use of an attachment not recommended or
sold by Schumacher®Electric Corporation
may result in a risk of re, electric shock or
injury to persons.
1.5 To reduce the risk of damage to electric
plug and cord, pull by the plug rather than
the cord when disconnecting charger.
1.6 An extension cord should not be used
unless absolutely necessary. Use of
improper extension cord could result
in a risk of re and electric shock. If an
extension cord must be used, make sure:
• The pins on plug of extension cord are
the same number, size and shape as
those of plug on charger.
• The extension cord is properly wired and
in good electrical condition
•The wire size is large enough for AC
ampere rating of charger, as specied in
section 8.
1.7 Do not operate charger with damaged
cord or plug – replace the cord or plug
immediately.
1.8 Do not operate charger if it has received
a sharp blow, been dropped, or otherwise
damaged in any way; take it to a qualied
serviceman.
1.9 Do not disassemble charger; take it to
a qualied serviceman when service or
repair is required. Incorrect reassembly
may result in a risk of electric shock or re.
1.10 To reduce risk of electric shock, unplug
charger from outlet before attempting
any maintenance or cleaning. Turning off
controls will not reduce this risk.
1.11 WARNING: RISK OF EXPLOSIVE GASES.
a. 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.
b. 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 markings on
these products and on the engine.
2. PERSONAL SAFETY PRECAUTIONS
2.1 Consider having someone close enough
by to come to your aid when you work
near a lead-acid battery.
2.2 Have plenty of fresh water and soap
nearby in case battery acid contacts skin,
clothing, or eyes.
2.3 Wear complete eye protection and
clothing protection. Avoid touching eyes
while working near battery.
2.4 If battery acid contacts skin or clothing,
wash immediately with soap and water. If
acid enters eye, immediately ood eye with
running cold water for at least 10 minutes
and get medical attention immediately.
2.5 NEVER smoke or allow a spark or ame
in vicinity of battery or engine.
2.6 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 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.
2.8 Use the charger for charging only 6V and
12V LEAD-ACID (STD, GEL or AGM)
rechargeable batteries with recommended
rated capacities of 24Ah (6V) and 12-59Ah
(12V). It is not intended to supply power to a
low voltage electrical system other than in a
starter-motor 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: This product contains one
or more chemicals known to the State
of California to cause cancer and birth
defects or other reproductive harm.

• 5 •
3. PREPARING TO CHARGE
3.1 If necessary to remove battery from
vehicle to charge, always remove
grounded terminal from battery rst. Make
sure all accessories in the vehicle are off,
so as not to cause an arc.
3.2 Be sure area around battery is well
ventilated while battery is being charged.
3.3 Clean battery terminals. Be careful to keep
corrosion from coming in contact with eyes.
3.4 Add distilled water in each cell until battery
acid reaches level specied by battery
manufacturer. Do not overll. For a battery
without removable cell caps, such as valve
regulated lead acid batteries, carefully follow
manufacturer’s recharging instructions.
3.5 Study all battery manufacturer’s
specic precautions while charging and
recommended rates of charge.
3.6 Determine voltage of battery by referring
to car 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. For a charger not
having an output voltage selector switch,
determine voltage of battery by referring
to car owner’s manual and make sure it
matches output rating of battery charger.
4. CHARGER LOCATION
4.1 Locate charger as far away from battery
as DC cables permit.
4.2 Never place charger directly above
battery being charged; gases from battery
will corrode and damage charger.
4.3 Never allow battery acid to drip on
charger when reading electrolyte specic
gravity or lling battery.
4.4 Do not operate charger in a closed-in
area or restrict ventilation in any way.
4.5 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 sections 6 and 7.
6. FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE
WARNING! A SPARK NEAR THE
BATTERY MAY CAUSE A BATTERY
EXPLOSION. TO REDUCE THE RISK
OF A SPARK NEAR THE BATTERY:
6.1 Position AC and DC cords to reduce risk
of damage by hood, door, or moving
engine part.
6.2 Stay clear of fan blades, belts, pulleys,
and other parts that can cause injury to
persons.
6.3 Check polarity of battery posts. POSITIVE
(POS, P, +) battery post usually has larger
diameter than NEGATIVE (NEG, N,–) post.
6.4 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.
6.6 For positive-grounded vehicle, connect
NEGATIVE (BLACK) clip from battery
charger to NEGATIVE (NEG, N, –)
ungrounded post of battery. Connect
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 When disconnecting charger, turn
switches to off, disconnect AC cord,
remove clip from vehicle chassis, and
then remove clip from battery terminal.
6.8 See Operating Instructions for length of
charge information.

• 6 •
7. FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE
WARNING! A SPARK NEAR THE
BATTERY MAY CAUSE A BATTERY
EXPLOSION. TO REDUCE THE RISK
OF A SPARK NEAR THE BATTERY:
7.1 Check polarity of battery posts. POSITIVE
(POS, P, +) battery post usually has a larger
diameter than NEGATIVE (NEG, N, –) post.
7.2 Attach at least a 24-inch-long 6-gauge
(AWG) insulated battery cable to
NEGATIVE (NEG, N, –) battery post.
7.3 Connect POSITIVE (RED) charger clip to
POSITIVE (POS, P, +) post of battery.
7.4 Position yourself and free end of cable as
far away from battery as possible – then
connect NEGATIVE (BLACK) charger clip
to free end of cable.
7.5 Do not face battery when making nal
connection.
7.6 When disconnecting charger, always do
so in reverse sequence of connecting
procedure and break rst connection
while as far away from battery as
practical.
7.7 A marine (boat) battery must be removed
and charged on shore. To charge it on
board requires equipment specially
designed for marine use.
8. GROUNDING AND AC POWER CORD CONNECTIONS
8.1 This battery charger is for use on a
nominal 120 volt AC circuit. The plug must
be plugged into an outlet that is properly
installed and grounded in accordance with
all local codes and ordinances. The plug
pins must t the receptacle (outlet). Do
not use with an ungrounded system.
8.2 DANGER: Never alter the AC cord or
plug provided – if it does not t the outlet,
have a proper grounded outlet installed
by a qualied electrician. An improper
connection can result in a risk of an
electric shock or electrocution.
NOTE: Pursuant to Canadian
Regulations, use of an adapter plug
is not allowed in Canada. Use of an
adapter plug in the United States is not
recommended and should not be used.
8.3 USING AN EXTENSION CORD
The use of an extension cord is not
recommended. If you must use an
extension cord, follow these guidelines:
• Pins on plug of extension cord must be
the same number, size, and shape as
those of plug on charger.
• Ensure that the extension cord is
properly wired and in good electrical
condition.
• Wire size must be large enough for
the AC ampere rating of charger, as
specied below:
Length of cord (feet) 25 50 100 150
AWG* size of cord 18 18 18 16
*AWG-American Wire Gauge
9. ASSEMBLY INSTRUCTIONS
9.1 Remove all cord wraps and uncoil the cables prior to using the battery charger.
10. FEATURES
8
35
4
7
6
2
1
9
10
1. AC Power cord
2. Digital display
3. Connected (blue) LED
4. Trouble (red) LED
5. Charging/Charged (green) LED
6. Display/ON button
7. Hook attachment
8. Ring terminal quick-connect
with 7.5A fuse
9. 12V accessory plug
quick-connect with 5A fuse
10. Battery clamp quick-connect

• 7 •
11. CONTROL PANEL
DIGITAL DISPLAY
The digital display indicates the
status of the battery and charger. See
Display Messages for a complete list of
messages.
NOTE: For energy efciency during
charging, the display will go into sleep
mode and will not display any messages.
To turn the display back on, press the
Display/ON button.
LED INDICATORS
BLUE (CONNECTED) LED solid –
The charger is connected to a wireless
network.
RED (TROUBLE) LED solid –
The battery is bad (or clamps are reversed).
See Aborted Charge section.
GREEN (CHARGING/CHARGED) LED
Solid – The charger is charging the battery.
Pulsing – The battery is fully charged and
the charger is in maintain mode.
12. INSTALLING THE APP AND REGISTERING YOUR CHARGER
•Before you begin, have your charger ID
card on hand.
•Download and install the SchuLink+
App (Apple store or Google Play).
NOTE: For Apple devices, requires iOS 9.0
or later; Android devices, OS 5.0 or later.
SETTING UP THE CHARGER’S
CONNECTION TO A WIRELESS
NETWORK
1. Open the App on your mobile device.
2. Press the Home icon.
3. Tap the three short horizontal bars
to bring up a menu.
4. Choose SETUP.
5. Swipe screens and follow directions for
setup to a wireless network.
REGISTERING A CHARGER
When using the App for the rst time with
a new charger, you must register your
charger(s) to the App.
1. Open the App on your mobile device.
2. Press the Home icon.
3. Tap the three short horizontal bars
to bring up a menu.
4. Choose ADD CHARGER.
5. Enter the Charger ID number and
password (SC21xxxxx-yy) located on
the Charger ID card included with the
unit. This information is also found on a
label on the side of the charger.
6. Swipe screens and follow directions to
nish charger registration.

• 8 •
13. USING THE APP TO CONTROL THE CHARGER
1. Connect your charger, following
the precautions listed in Sections 6
and 7. Plug the charger into a live
grounded 120V AC outlet. The blue
CONNECTED LED on the charger will
turn solid. If the blue LED is not lit, refer
to Troubleshooting.
2. Open the SchuLink+ App.
3. Log in, using the email address and
password that you provided when
you registered.
If you forget your
password, select Forgot Password.
4. The HOME screen shows all connected
chargers. Swipe left on a charger
to bring up the screen to delete the
charger or edit the charger information.
To add additional chargers, select Add
Charger. The App can accommodate
up to 12 different chargers.
Use one
of the arrows on the right to select the
charger you want to monitor.
THE STATUS SCREEN
NOTE: Tap any icon to bring up more
information.
A.Charge Indicator Ring – The color
of this ring and the amount of the
circle that is lled indicates the
charge level. A completely green ring
indicates the battery is fully charged.
This corresponds to the percentage
displayed in the center.
B.Charge Time – The amount of time
needed to charge the battery when it
was rst connected.
C.Charge Pause Switch – Tap the sliding
switch to start or pause the charging
process. The current status is shown
above the switch. You can pause the
charge while watching the voltage drop
to see if there is a power draw from the
battery. The charging process will not be
reset unless the charger is unplugged and
plugged in again. NOTE: This charger is
also a maintainer and it is not necessary
to stop the charging process; the charger
will automatically switch to maintenance
mode when the battery is fully charged.
D. Connected to a wireless network –
When the icon is green, this indicates
the charger is connected to a wireless
network. When the charger is not
connected to a wireless network, the
icon turns
gray. Tap the to check the
signal strength.
E. Connected to AC – When green, this
indicates the charger is plugged into
a live 120V AC outlet. If the charger is
unplugged from the AC, the charger
will power itself off of the battery for ve
minutes, sending out a loss of power
signal to the app. When no AC power is
detected, the icon turns gray.
F. Connected to Battery – When green,
indicates that the battery is properly
connected to the charger. When clamps
are reversed or not connected, the icon
turns gray.
G.Battery Voltage – Shows battery
voltage. This voltage varies throughout
the charging cycle, but gives an
indication of the health of the battery.
If the value goes below 12.5V during
Float or Maintain modes, this could
indicate excessive draw on the
battery by the vehicle or the battery
approaching the end of its life.
H.Charge Amps – Shows the current the
charger is putting into the battery.
I. Charger Temperature – Shows the
charger’s temperature status. The
charger will automatically lower
the charge current if it detects the
temperature is higher than normal.
Use the icon to return to the HOME screen.
ABD
G
E
H
F
I
C

• 9 •
CHARGING MODE
Charging mode lets you follow the
progress through the 8 stages of charging:
1. Auto Voltage Detection – In this mode,
a battery is connected to the charger
and the charger is determining
whether it is a 6V or 12V battery.
2. Desulfation – The charger has
detected an unhealthy, sulfated battery
and has begun a special process to try
to remove the sulfation and possibly
restore the battery.
3. Soft Start – The charger has
determined the battery voltage and
gently starts to charge the battery by
slowly increasing the charging current.
4. Bulk Mode – The majority of the
energy delivered to the battery is
done in this mode. When the charger
exits this mode, the battery will be at
approximately 80% recharged.
5. Absorption Mode – This mode nishes
the charge of the battery by holding
the battery voltage constant until the
current tapers off.
6. Monitoring Mode – The battery is
allowed to rest for 24 hours before
checking for a loss of charge.
7. Float Mode – The charger is replacing
energy the battery has lost through
self-discharge or idle draw of the
attached vehicle.
8. Maintain – The charger checks the
battery every 12 hours and puts the
charger into oat mode to replenish
lost energy from the battery.
RESETTING YOUR PASSWORD
1. In the log in screen, press Forgot
Password. A password reset link will
be sent to the email address
you provided during registration.
2. Enter your new password.
3. Reenter the new password.
4. Click Reset Password to complete the
process.
14. OPERATING THE CHARGER
USING THE CHARGER
WITHOUT THE INTERNET
The charger itself is a stand-alone device
and will function as a battery charger/
maintainer without an internet connection.
However, without an internet connection,
the App will not reect the charging
progress.
IMPORTANT: Do not start the vehicle with
the charger connected to the AC outlet, or it
may damage the charger and your vehicle.
WARNING: This charger is equipped with
an auto-start feature. Current is supplied
to the battery clamps before a battery is
connected, and the clamps will spark if
touched together.
NOTE: This charger is also a maintainer,
and can be left on the battery of vehicles
that are being stored.
USING THE QUICK-CONNECT
CABLE CONNECTORS
Connect any of the three output cable
assemblies to the charger in a matter of
seconds.
IMPORTANT: Use the charger with only
one connector at a time. Do not connect
accessory cables together. This will cause
reverse polarity and damage the charger
and battery.
BATTERY CLAMP QUICK-CONNECT
Charging a Battery in the Vehicle
1. Turn off all the vehicle’s accessories.
2. Do not close the hood, battery
compartment, etc.
3. Clean the battery terminals.
4. Place the charger on a dry, non-
ammable surface, or use the
convenient hook attachment to hang
the unit safely outside the work area.
5. Lay the AC/DC cables away from any
fan blades, belts, pulleys and other
moving parts.

• 10 •
6. Connect the battery, following the
precautions listed in sections 6 and 7.
7. Connect the charger to a live
grounded 120V AC outlet.
8. The blue CONNECTED LED will
light, indicating that the charger is
connected to a wireless network.
9. When charging starts, the green
LED will be solid, and the display
will scroll “CHARGING” while the
charger determines that the battery is
properly connected, the condition of
the battery, and whether the battery is
6V or 12V.
10. Monitor the progress of the charge by
pressing the display button on
the front of the unit. When the battery is
fully charged, the green LED
will pulse.
11. When charging is complete,
disconnect the charger from the AC
power, remove the clamps from the
vehicle’s chassis, and then remove
the clamp from the battery terminal.
Charging a Battery Outside of the Vehicle
1. Place battery in a well-ventilated area.
2. Clean the battery terminals.
3. Connect the battery, following the
precautions listed in sections 6 and 7.
4. Connect the charger to a live grounded
120V AC outlet.
5. The blue CONNECTED LED will
light, indicating that the charger is
connected to a wireless network.
6. When the charger starts, the green
LED will be solid, and the display
will scroll “CHARGING” while the
charger determines if the battery is
properly connected, the condition of
the battery, and whether the battery is
6V or 12V.
7. Monitor the progress of the charge by
pressing the display button on
the front of the unit. When the battery is
fully charged, the green LED
will pulse.
8. When charging is complete, disconnect
the charger from the AC power,
disconnect the negative clamp,
and nally the positive clamp.
RING TERMINAL QUICK-CONNECT
The ring connectors permanently attach to
the battery, providing easy access to quickly
connect the charger to your battery. This
application is appropriate for motorcycles,
lawn tractors, ATVs and snowmobiles.
1. To permanently attach to a battery,
loosen and remove each nut from the
bolt at the battery terminal.
IMPORTANT: Loss of vehicle settings can
occur. Check vehicle owners manual for
specic information.
2. Connect the red POSITIVE connector
ring to the POSITIVE battery terminal.
3. Connect the black NEGATIVE connector
ring to the NEGATIVE battery terminal.
4. Replace and tighten the nuts to secure.
5. Connect the cable to the end of the
charger output cord. Take care to keep
the wires and plug away from metal
and moving parts.
6. Plug the charger power cord into a live
grounded 120V AC outlet.
12V ACCESSORY PLUG
QUICK-CONNECT
Charge or maintain your battery without
lifting the hood. NOTE: The charger itself
must be disconnected when the vehicle
is in use.
1. Connect the end of the 12V accessory
plug quick-connect to the charger.
2. Insert the 12V accessory plug into the
12V accessory outlet.
3. Route the power cord from the charger
through the vehicle’s open window.
4. Plug the charger power cord into a live
grounded 120V AC outlet.
5. If the vehicle’s ignition key has to be
on in order for the accessory outlet
to supply/receive power, turn the key,
without starting the engine. Consult
your vehicle owners manual for
instructions on how to make the 12V
outlet live, without drawing excessive
power.
AUTOMATIC CHARGING MODE
When an automatic charge is performed,
the charger switches to the maintain mode
automatically after the battery is charged.

• 11 •
BATTERY CONNECTION INDICATOR
If the charger does not detect a properly
connected battery, charging will not start
and the digital display will show one
of two messages. If the display shows
“CONNECT BATTERY”, make sure the
charger is connected to the battery and the
connection points are clean and making
a good connection. If the display shows
“WARNING CLAMPS REVERSED”,
unplug the charger from the AC outlet,
reverse the connections at the battery,
and then plug the charger back in.
CHARGE COMPLETION AND MAINTAIN
MODE (Float Mode Monitoring)
Charge completion is indicated by the
green LED pulsing and the digital
display scrolling “FULLY CHARGED
AUTO MAINTAINING”. This means that
the charger has stopped charging and has
switched to the Maintain Mode of operation.
NOTE: If the charger has to provide its
maximum maintain current (1.8A) for a
continuous 12 hour period, it will go into
Abort Mode (see Aborted Charge section).
This is usually caused by a load on the
battery, or the battery could be bad. Make
sure there are no loads on the battery. If
there are, remove them. If there are none,
have the battery checked or replaced.
MAINTAINING A BATTERY
This unit maintains both 6 and 12 volt
batteries, keeping them at full charge. It
can charge small batteries and maintain
both small and large batteries. If you are
maintaining a fully charged large battery,
you are properly utilizing the battery
charger. However, if you use this battery
charger to charge a large battery, such
as a marine deep-cycle battery that was
not fully charged, you may not get the
battery’s full capacity. Therefore, we do
not recommend charging a large battery
with this unit.
NOTE: The maintain mode technology
allows you to safely charge and maintain
a healthy battery for extended periods
of time. However, problems with the
battery, electrical problems in the
vehicle, improper connections or other
unanticipated conditions could cause
excessive current draws. As such,
occasionally monitoring your battery and
the charging process is required.
BATTERY CHARGING TIMES
APPLICATION BATTERY
SIZE
CHARGING TIME (hours)
2A 6A 8A 10A
POWERSPORTS 6 Ah
32Ah
6 2 1.75 1.5
15 5 4.5 4
AUTOMOTIVE 300 CCA
1000 CCA
12 4 3.5 3
30 10 8.5 7
MARINE 50 Ah
105 Ah
15 5 4.25 3.5
33 11 9.5 8
Times are based on a 50% discharged
battery and may change, depending on
age and condition of battery.
DESULFATION MODE
If the 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.
If successful, normal charging will resume
after the battery is desulfated. Desulfation
could take up to 8 hours. If desulfation
fails, charging will abort, the red LED
will light, and the display will scroll
“CHARGE ABORTED-BAD BATTERY”.
ABORTED CHARGE
If charging cannot be completed normally,
charging will abort. When charging aborts,
the charger’s output is shut off, the red
LED will light, and the display will scroll
“CHARGE ABORTED-BAD BATTERY”.
Do not continue attempting to charge this
battery. Have it checked or replaced.

• 12 •
15. DISPLAY MESSAGES
“CONNECT BATTERY”
(Blue LED only, solid*) – Plugged into the
AC outlet without the clamps connected to
a battery.
“WARNING CLAMPS REVERSED”
(Red and Blue LEDs solid*) – Plugged
into the AC outlet and the clamps are
connected backwards to a 6V or 12V
battery.
“CHARGING” (Green LED solid) –
Plugged into the AC outlet, and when
rst connected to a 6V or 12V battery
correctly.
“CHARGING 12V XX%”
(Green LED solid) – Plugged into the AC
outlet, correctly connected and charging a
12V battery.
“CHARGING 6V XX%”
Green LED solid) – Plugged into the AC
outlet, correctly connected and charging a
6V battery.
*Blue LED is only lit when connected to a
wireless network.
“FULLY CHARGED AUTO MAINTAINING”
(Green LED pulsing) – Plugged into a live
grounded AC outlet and correctly connected
to a fully charged 6V or 12V battery.
“CHARGE ABORTED-BAD BATTERY”
(Red LED solid) – Circumstances that could
cause an Abort situation during charging:
•The battery is severely sulfated or has a
shorted cell and can’t reach a full charge.
•The battery is too large or there is a
bank of batteries and it doesn’t reach full
charge within a set time period.
Circumstances that could cause an Abort
situation during maintain:
•The battery is severely sulfated or has a
weak cell and will not hold a charge.
•There is a large draw on the battery and
the charger has to supply its maximum
maintain current for a 12 hour period to
keep the battery at full charge.
16. MAINTENANCE AND CARE
A minimal amount of care can keep your
battery charger working properly for years.
•Clean the clamps each time you are
nished charging. Wipe off any battery
uid that may have come in contact with
the clamps, to prevent corrosion.
•Occasionally cleaning the case of the
charger with a soft cloth will keep the
nish shiny and help prevent corrosion.
•Coil the input and output cords neatly
when storing the charger. This will help
prevent accidental damage to the cords
and charger.
•Store the charger unplugged from the AC
power outlet.
•Store inside, in a cool, dry place. Do not
store the clamps clipped together, on or
around metal, or clipped to the cables.
17. TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
The charger’s blue
CONNECTED LED is not lit.
The charger is not connected
to a wireless network.
See Section 12.
The charger will not turn on
when properly connected.
AC outlet is dead.
Poor electrical connection.
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and
extension cord for loose tting
plug.
I cannot select a 6V or 12V
setting.
The charger is equipped
with Auto Voltage Detection,
which automatically detects
the voltage and charges the
battery.
No problem; this is normal.

PROBLEM POSSIBLE CAUSE SOLUTION
The display scrolls
“CONNECT BATTERY”.
The clamps are not making a
good connection.
The fuse is bad.
Check for poor connection at
battery and frame.
Replace the in-line fuse for
the ring connector or 12V
accessory plug connector.
Charging a 12V battery,
but the display shows
“CHARGING 6V”.
Battery may be extremely
discharged.
No problem; the charger
will eventually recognize
battery as 12V and charge
completely.
Red LED is solid and the
display scrolls “CHARGE
ABORTED-BAD BATTERY”.
The battery is bad.
The battery is too large for the
charger.
Disconnect charger from the
AC outlet and then remove
the clamps. Do not continue
to try to charge the battery.
Have the battery checked or
replaced.
You need a charger with a
higher amp rate.
View other battery chargers and jump starters made by Schumacher on our website.