Your battery maintainer has been engineered and manufactured to our high standard for dependability, ease of operation,
and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:To reduce the risk of injury, the user must read and understand the operator’s manual before using
this product.
Thank you for your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
Cette mainteneur de charge pour batterie a été conçue et fabriquée
conformément à nos strictes normes de fiabilité, simplicité d’emploi
et sécurité d’utilisation. Correctement entretenue, elle vous donnera
des années de fonctionnement robuste et sans problème.
AVERTISSEMENT : Pour réduire les risques de
blessures, l’utilisateur doit lire et veiller à bien comprendre le
manuel d’utilisation avant d’employer ce produit.
Merci de votre achat.
CONSERVER CE MANUEL POUR
FUTURE RÉFÉRENCE
Su cargador mantenedor para baterías ha sido diseñada y fabricada
de conformidad con las estrictas normas para brindar fiabilidad,
facilidad de uso y seguridad para el operador. Con el debido cuidado,
le brindará muchos años de sólido y eficiente funcionamiento.
ADVERTENCIA: Para reducir el riesgo de lesiones,
el usuario debe leer y comprender el manual del operador antes
de usar este producto.
Le agradecemos su compra.
GUARDE ESTE MANUAL PARA
FUTURAS CONSULTAS
See this fold-out section for all of the figures referenced in
6
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the operator’s manual.
Consulter l’encart à volets afin d’examiner toutes les figures
mentionnées dans le manuel d’utilisation.
Consulte esta sección desplegable para ver todas las figuras
a las que se hace referencia en el manual del operador.
Fig. 1Fig. 2
BACK VIEW
B
C
A
6
/
12
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a
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a
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VUE DE ARRIÈRE / VISTA TRASERO
A
4-1/2 in.
(114,3 mm)
A - Key hole hanger (trou de serrure pour la
suspension, colgador tipo bocallave)
E
D
F
H
A - DC Cord (cordón eléctrico c.c., cordon
d’alimentation c.c.)
B - Battery clamps (colliers de piles, prinzas
de la batería)
C - Terminal rings (bagues de piles, aros de
la batería)
D - Red LED (témoin rouge, diodo
luminiscente rojo)
G
I
E - Green LED (témoin vert, diodo
luminiscente verde)
F - Voltage Selector Switch (sélecteur de
tension, selector de voltaje)
G - Battery charging cable (câbles du charge
de pile, cables para cargar la batería)
H - AC power cord (cordón eléctrico c.a.,
cordon d’alimentation c.a.)
I - Cover (couvercle, cubierta)
Fig. 3
A
D
B
C
A - 6 Volt position (position 6 V, posición de
6 V)
B - 12 Volt position (position 12 V, posición
de 12 V)
C - Off position (position d’arrêt, posición
apagado)
D - Voltage Selector Switch (sélecteur de
tension, selector de voltaje)
i
Fig. 4
E
R
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O
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C
HAR
G
E
6
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1
2
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O
6
/
12
V
M
a
in
t
a
i
n
e
r
A
C
B
A - Battery ring (bague de piles, aro de la
batería)
B - Battery clamps (colliers de piles, prinzas
de la batería)
C - Battery charging cable(câbles du charge
de pile, cables para cargar la batería)
Fig. 5
Fig. 6
6
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12
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a
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A
A
A - Battery charging cable with clamps (câbles du charge de
pile avec colliers, cables para cargar la batería con prinzas)
B - Lead acid battery (pile au plomb-acide, batería de plomo-
ácido)
Fig. 7
A
B
C
B
A
B
A - DC Cord (cordón eléctrico c.c., cordon
d’alimentation c.c.)
B - Battery charging cable with rings (câbles
du charge de pile avec bagues, cables
para cargar la batería con aros)
6
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12
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A
A - Battery charging cable with rings (câbles du charge de pile
avec bagues, cables para cargar la batería con aros)
B - Lead acid battery (pile au plomb-acide, batería de plomo-
ácido)
C - Nut (écrou, tuerca)
D - Bolt (vis, perno)
Features ........................................................................................................................................................................... 7
Parts Ordering / Service ....................................................................................................................................Back Page
INTRODUCTION
This product has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability
have been given top priority in the design of this product making it easy to maintain and operate.
WARRANTY
LIMITED TWO YEAR WARRANTY AND 30 DAY EXCHANGE POLICY
30-DAY EXCHANGE POLICY: During the first 30 days after date of purchasing this product, you may exchange it by
returning it with proof of purchase and all original equipment packaged with the original product to the dealer from which
it was purchased. The replacement product will be covered by the limited warranty for the balance of the two year period
from the date of the original purchase.
LIMITED TWO YEAR WARRANTY. This product is warranted against all defects in workmanship or materials for a
period of two years from the date of purchase. The warranty on any accessories for this product, excluding batteries,
is limited to 30 days from the date the accessory is purchased. To obtain warranty service, call Customer Service at
1-800-860-4050 for warranty return instructions. The product must be properly packaged and returned with all equipment
that was included with the original product. When you request warranty service, you must also present proof of purchase
documentation, which includes the date of purchase (for example, a receipt or a bill of sale). Defective products returned
within the warranty period will be repaired or replaced, at our option, free of charge, within thirty (30) days or less. The cost
of shipping the product to us is your responsibility. This warranty only covers defects arising under normal usage and does
not cover any malfunction, failure or defects resulting from misuse, abuse, neglect, alteration, modification or unauthorized
repairs. It applies only to the original purchaser at retail, and may not be transferred. Techtronic Industries North America,
Inc. makes no warranties, representations or promises as to the quality or performance of this product other than those
specifically stated in this warranty. Any implied warranties granted under state law, including warranties of merchantability
or fitness for a particular purpose, are limited to two years from the date of purchase. Techtronic Industries North America,
Inc. is not responsible for direct, indirect, or incidental damages Some states do not allow limitations on how long an
implied warranty lasts, or the exclusion or limitation of incidental or consequential damages, so the above limitations and
exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which
vary from state to state.
2 − English
IMPORTANT SAFETY INSTRUCTIONS
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all instructions listed below may result
in electric shock, fire and/or serious injury.
1. SAVE THESE INSTRUCTIONS - This manual contains
important safety and operating instructions for battery
maintainer model RY9904.
2. Before using battery maintainer, read all instructions
and cautionary markings in this manual and the product
using the battery to prevent misuse of the products and
possible injury or damage.
3. Do not expose battery maintainer to rain or snow,
or use when wet.
4. Use of an attachment not recommended or sold by
the battery maintainer manufacturer may result in
a risk of fire, electric shock, or injury to persons.
5. To reduce the risk of damage to electric plug and
cord, pull by plug rather than cord when disconnecting
maintainer.
6. 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:
a. That pins on plug of extension cord are the same
number, size, and shape as those of plug on battery
maintainer;
b. That extension cord is properly wired and in good
electrical condition; and,
c. That wire size is large enough for AC ampere rating
of battery maintainer as specified below:
Cord Length (Feet) 25' 50' 100'
Cord Size (AWG) 16 16 14
NOTE: AWG = American Wire Gauge
7. Do not operate battery maintainer with a damaged cord or plug. Replace the cord or plug immediately.
8. Do not operate battery maintainer if it has received
a sharp blow, been dropped, or otherwise damaged
in any way; take it to an authorized serviceman.
9. Do not disassemble battery maintainer; take it to a
qualified serviceman when service or repair is required.
Incorrect reassembly may result in a risk of electric
shock or fire.
10. To reduce the risk of electric shock, unplug
battery maintainer from outlet before attempting any
maintenance or cleaning. Turning off controls will not
reduce this risk.
11. WARNING - Risk of Explosive Gases.
a. WORKING IN VICINITY OF A LEAD-ACID BATTERYIS
ANGEROUS. 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 MAINTAINER.
b. To reduce risk of battery explosion, follow these
instructions and those published by the battery
manufacturer and manufacturer of any equipment
you intend to use in vicinity of battery. Review
cautionary marking on these products and on engine.
12. PERSONAL PRECAUTIONS
a. Consider having someone close enough by to come
to your aid when you work near a lead-acid battery.
b. Have plenty of fresh water and soap nearby in case
battery acid contacts skin, clothing, or eyes. Be
aware of first aid procedures in case of accidental
contact with battery acid.
c. Wear complete eye protection and clothing
protection. Avoid touching the eyes while working
near a battery.
d. 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.
e. NEVER smoke or allow a spark or flame in the vicinity
of the battery or engine.
f. 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.
g. 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.
h. Use battery maintainer for charging a LEAD-ACID
battery only. It is not intended to supply power to a
low voltage electrical system other than in a startermotor application. Do not use battery maintainer 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.
i. NEVER charge a frozen battery.
3 − English
IMPORTANT SAFETY INSTRUCTIONS
13. PREPARING TO CHARGE
a. 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.
b. Be sure area around battery is well ventilated while
battery is being charged.
c. Clean battery terminals. Be careful to keep corrosion
from coming in contact with eyes.
d. Follow the manufacturer's instructions on properly
filling the battery with water if necessary. Always
follow the manufacturer's instructions on charging
the battery.
e. Study all battery manufacturer's specific precautions
while charging and recommended rates of charge.
f. 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 battery
maintainer has adjustable charge rate, charge battery
initially at lowest rate.
14. BATTERY MAINTAINER LOCATION
a. Locate battery maintainer as far away from battery
as DC cables permit.
b. Never place battery maintainer directly above battery
being charged; gases from battery will corrode and
damage maintainer.
c. Never allow battery acid to drip on battery maintainer
when reading electrolyte specific gravity or filling
battery.
d. Do not operate battery maintainer in a closed-in area
or restrict ventilation in any way.
e. Do not set a battery on top of battery maintainer.
15. DC CONNECTION PRECAUTIONS
a. Connect and disconnect battery charging cables only
after setting any battery maintainer switches to “off”
position and removing AC cord from electric outlet.
Never allow clamps to touch each other.
b. Attach clamps to battery and chassis as described
in the Operation section.
16. Follow these steps when battery is installed in
vehicle. A spark near battery may cause battery
explosion. To reduce risk of a spark near battery:
a. Position AC and DC cords to reduce risk of damage
by hood, door, or moving engine parts.
b. Stay clear of fan blades, belts, pulleys, and other
parts that can cause injury to persons.
c. Check polarity of battery posts. Positive
(Pos, P,+) battery post usually has larger diameter
than Negative (Neg, N, –) post.
d. Determine which post of battery is grounded
(connected) to the chassis. If negative post is
grounded to the chassis, see 16e "negativegrounded vehicle". If positive post is grounded to
the chassis, see 16f, "positive-grounded vehicle".
e. For negative-grounded vehicle, connect POSITIVE
(RED) clamp from battery charging cable to POSITIVE
(POS, P, +) ungrounded post of battery. Connect
NEGATIVE (BLACK) clamp to vehicle chassis or
engine block away from battery. Do not connect
clamp to carbure tor, fuel lines, or sheet-metal body
parts. Connect to a heavy gage metal part of the
frame or engine block.
f. For positive-grounded vehicle, connect NEGATIVE
(BLACK) clamp from battery charging cable to
negative (NEG, N, –) ungrounded post of battery.
Connect POSITIVE (RED) clamp to vehicle chassis
or engine block away from battery. Do not connect
clamp to carburetor, fuel lines, or sheet-metal body
parts.Connect to a heavy gage metal part of the
frame or engine block.
g. When disconnecting battery maintainer, turn
switches to off, disconnect AC cord, remove clamp
from vehicle chassis, and then remove clamp from
battery terminal.
h. See the battery's operator's manual for length of
charge information.
17. Follow these steps when battery is outside the vehicle.
A spark near the battery may cause battery explosion.
To reduce risk of a spark near battery:
a. Check polarity of battery posts. Positive
(Pos, P,+) battery post usually has larger diameter
than Negative (Neg, N, –) post.
b. Attach at least a 24-in. long 6-gauge (AWG) insulated
battery cable to negative (Neg, N, –) battery post.
c. Connect positive (RED) charger clip to positive
(Pos, P, +) post of battery.
d. Position yourself and free end of cable as far away
from battery as possible, then connect negative
(black) charger clamp to free end of cable.
e. Do not face battery when making final connection.
f. When disconnecting battery maintainer, always do
so in reverse sequence of connecting procedure and
break first connection while as far away from battery
as practical.
g. A marine (boat) battery must be removed and
charged on shore. To charge it on board requires
equipment specially designed for marine use.
4 − English
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOLSIGNALMEANING
DANGER:
WARNING:
CAUTION:
CAUTION:
Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the product better and safer.
SYMBOLNAME
Safety AlertIndicates a potential personal injury hazard.
Read Operator’s Manual
Eye Protection
Indicates an imminently hazardous situation, which, if not avoided, will result
in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
(Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
DESIGNATION/EXPLANATION
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear eye protection with side shields marked to comply
with ANSI Z87.1.
Wet Conditions AlertDo not expose to rain or use in damp locations.
VVoltsVoltage
HzHertzFrequency (cycles per second)
WWattPower
Alternating CurrentType of current
Direct CurrentType or a characteristic of current
5 − English
ELECTRICAL
DOUBLE INSULATION
Double insulation is a concept in safety in electric power tools,
which eliminates the need for the usual three-wire grounded
power cord. All exposed metal parts are isolated from the
internal metal motor components with protecting insulation.
Double insulated tools do not need to be grounded.
WARNING:
The double insulated system is intended to protect
the user from shock resulting from a break in the tool’s
internal insulation. Observe all normal safety precautions
to avoid electrical shock.
NOTE: Servicing of a product with double insulation requires
extreme care and knowledge of the system and should
be performed only by a qualified service technician. For
service, we suggest you return the product to your nearest
authorized service center for repair. Always use original
factory replacement parts when servicing.
ELECTRICAL CONNECTION
This product has a precision-built electric motor. It should
be connected to a power supply that is 120 V, AC only (normal household current), 60 Hz. Do not operate this
product on direct current (DC). A substantial voltage drop
will cause a loss of power and the motor will overheat. If
the product does not operate when plugged into an outlet,
double-check the power supply.
EXTENSION CORDS
When using a power tool at a considerable distance from
a power source, be sure to use an extension cord that has
the capacity to handle the current the product will draw. An
undersized cord will cause a drop in line voltage, resulting in
overheating and loss of power. Use the chart to determine
the minimum wire size required in an extension cord. Only
round jacketed cords listed by Underwriter’s Laboratories
(UL) should be used.
When working outdoors with a product , use an extension
cord that is designed for outside use. This type of cord is
designated with “WA” or “W” on the cord’s jacket.
Before using any extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
**Ampere rating (on product data plate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25' 16 16 16 16 14 14
50' 16 16 16 14 14 12
100' 16 16 14 12 10 —
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
WARNING:
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on lumber,
tools, or other obstructions while you are working with a
power tool. Failure to do so can result in serious personal
injury.
Check extension cords before each use. If damaged
replace immediately. Never use the product with a
damaged cord since touching the damaged area could
cause electrical shock resulting in serious injury.
6 − English
WARNING:
FEATURES
PRODUCT SPECIFICATIONS
Input ...............................................................................................................................................120 Volts, AC only, 60 Hz
The safe use of this product requires an understanding of
the information on the product and in this operator’s manual.
Before use of this product, familiarize yourself with all operating features and safety rules.
BATTERY CHARGING CABLE
Use the battery charging cable with cover to connect 6 and
12 Volt lead acid batteries to the battery maintainer.
NOTE: Place cover onto the battery charging cable when
not in use.
FLOAT MODE
The maintainer automatically enters Float Mode when not
charging or when maintaining batteries. This allows the
maintainer to conserve energy by charging batteries only
as needed, and also protects the cells and maximizes the
life of your batteries.
ASSEMBLY
ELECTRONIC FEEDBACK
LEDs and alarms provide feedback to indicate the condition
of the battery and the maintainer.
KEY HOLE HANGER
The charger has a key hole hanging feature for convenient,
space saving storage. Screws should be installed so that
the center distance is 4-1/2 in.
VOLTAGE SELECTOR SWITCH
The voltage selector switch lets the operator choose between
6 volt and 12 volt operation.
UNPACKING
This product has been shipped completely assembled.
Carefully remove the product and any accessories from
the box. Make sure that all items listed in the packing list
are included.
WARNING:
Do not use this product if it is not completely assembled
or if any parts appear to be missing or damaged. Use of
a product that is not properly and completely assembled
could result in serious personal injury.
Inspect the product carefully to make sure no breakage
or damage occurred during shipping.
Do not discard the packing material until you have care-
fully inspected and satisfactorily operated the product.
If any parts are damaged or missing, please call
1-800-860-4050 for assistance.
PACKING LIST
Battery Maintainer
Battery Charging Cable
Battery Clamps (2)
Terminal Rings (2)
Operator’s Manual
WARNING:
If any parts are damaged or missing do not operate this
product until the parts are replaced. Use of this product
with damaged or missing parts could result in serious
personal injury.
WARNING:
Do not attempt to modify this product or create accessories not recommended for use with this product. Any
such alteration or modification is misuse and could result
in a hazardous condition leading to possible serious
personal injury.
7 − English
OPERATION
WARNING:
Do not allow familiarity with products to make you
careless. Remember that a careless fraction of a second
is sufficient to inflict serious injury.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1. Failure to do so could result in
objects being thrown into your eyes resulting in possible
serious injury.
WARNING:
Do not use any attachments or accessories not
recommended by the manufacturer of this product. The
use of attachments or accessories not recommended
can result in serious personal injury.
ATTACHING TERMINAL RINGS OR BATTERY
CLAMPS
See Figure 4.
Terminal rings and battery clamps have been included with
the product to support different battery types.
To attach:
Disconnect the battery charging cable from the battery
maintainer.
Slide the open end of the terminal ring or battery clamp
onto the battery charging cable until it is securely
attached.
NOTE: Never start a vehicle if the maintainer is attached
to the vehicle battery.
To remove:
Disconnect the battery charging cable from the battery
maintainer.
Pull the terminal ring or battery clamp away from the
battery charging cable and store for later use.
APPLICATIONS
You may use this product for the following purposes:
Charging 6 and 12 Volt lead acid batteries.
CAUTION:
If at any point during the charging process none of the
LEDs are lit, remove the battery charging cable from
the battery and disconnect the AC power cord from the
power source to avoid damaging the product. DO NOT
connect the battery maintainer to another battery. Return
the maintainer and battery to your nearest service center
for service or replacement.
CAUTION:
Charge in a well-ventilated area. Do not block maintainer
vents. Keep them clear to allow proper ventilation.
WARNING:
Use the battery maintainer to charge 6 and 12 Volt lead
acid batteries only. Other types of batteries may burst,
causing personal injury and damage.
VOLTAGE SELECTOR SWITCH
See Figure 3.
The battery maintainer can charge both 6 Volt and 12 Volt
vented wet lead acid batteries. The amount of voltage provided by the maintainer is controlled by the voltage selector
switch. To charge 6 Volt batteries, slide the selector fully to
the left. To charge 12 Volt batteries, slide the selector fully
to the right. To turn the unit off, place the selector in the
middle position.
8 − English
CONNECTING THE BATTERY CHARGING
CABLE TO THE BATTERY
See Figures 5 - 7.
To connect the battery charging cable with clamps:
Ensure the voltage selector switch is in the off position.
Connect the battery maintainer to the power supply. Make
sure the power supply is normal household voltage, 120
volts, AC only, 60 Hz.
Plug the end of the battery charging cable into the end of
the maintainer’s DC cord. Ensure that the battery charging
cable fits snuggly into the DC cord, but do not force it.
Using the battery clamps, connect the battery charging
cable to the battery terminal. Connect the red wire to the
positive (+) terminal first, then connect the black wire to the
negative (-) terminal. Make sure all connections are secure.
NOTE: Be careful not to short across the terminals when
installing. Shorting the terminals together can cause
sparks, damage to the battery or generator, or even burns
or explosions.
To connect the battery charging cable with rings:
Ensure the voltage selector switch is in the off position.
Connect the battery maintainer to the power supply. Make
sure the power supply is normal household voltage, 120
volts, AC only, 60 Hz.
Plug the end of the battery charging cable into the end of
the maintainer’s DC cord. Ensure that the battery charging
cable fits snuggly into the DC cord, but do not force it.
Remove the nuts and bolts from the battery terminals.
Connect the red wire to the positive (+) battery terminal
first, then connect the black wire to the negative (−)
battery terminal using the nuts and bolts. Make sure all
connections are tight.
OPERATION
NOTE: Be careful not to short across the terminals when
installing. Shorting the terminals together can cause
sparks, damage to the battery or generator, or even burns
or explosions.
CHARGING
See Figures 6 - 7.
Ensure the voltage selector switch is in the off position.
Connect the battery maintainer to the power supply. Make
sure the power supply is normal household voltage, 120
volts, AC only, 60 Hz.
Attach battery charging cable to the battery maintainer
and then to the battery.
Slide the voltage selector switch to the appropriate
voltage setting.
Once charging begins, the green LED should start to flash. NOTE: If the green LED does not flash or if the red LED
comes on, the battery is not charging properly. Turn
the battery maintainer off and refer to the Electronic Feedback section for solutions.
The battery will become slightly warm to the touch while
charging. This is normal and does not indicate a problem.
When charging is complete, the green LED will remain on
continuously. This indicates the battery is fully charged
and the maintainer is in Float Mode.
The maintainer will periodically wake from Float Mode to
ensure the battery remains in a fully charged state.
When you remove the battery, disconnect the negative
(black) wire first, then the positive (red) wire, being careful
not to short across the terminals. Always abide by the
safety warnings provided with the battery.
NOTE: It is highly recommended that you refer to your
battery manufacturer’s instructions for specific charge
times.
Unplug charging cable and store for later use.
NOTE: Place end cap onto the battery charging cable
when not in use.
ELECTRONIC FEEDBACK
GREEN
LED
Flash——The battery is charging.
On——The battery is fully charged.
—ONBeeps Continuously The battery’s polarity is reversed.
—FlashBeeps Continuously
RED
LED
ALARM
CONDITION
Battery or battery maintainer is
defective.
ACTION
Monitor battery until charging is
complete.
When charging is complete, the
maintainer will go into Float Mode.
Reverse the position of the battery
cable’s clamps/rings on the battery’s
terminals.
If defective, try to repeat the conditions
a second time by disconnecting and
reconnecting the battery charging
cables. If the LED status repeats a
second time, try charging a different
battery. If a different battery charges
normally, dispose of the defective
battery. If a different battery also
indicates “Defective”, the maintainer
may be defective.
9 − English
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