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This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not approved by the party responsible for compliance could void user's authority to operate the equipment.
SAFETY GUIDELINES / DEFINITIONS
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
CAUTION: Used without the safety alert symbol indicates potentially hazardous situation which,
if not avoided, may result in property damage.
RISK OF UNSAFE OPERATION. When using tools or equipment, basic safety precautions should
always be followed to reduce the risk of personal injury. Improper operation, maintenance or
modification of tools or equipment could result in serious injury and property damage. There
are certain applications for which tools and equipment are designed. Manufacturer strongly
recommends that this product NOT be modified and/or used for any application other than for
which it was designed. Read and understand all warnings and operating instructions before using
any tool or equipment.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS
WARNING: Read all instructions before operating the battery charger. Failure to
follow all instructions listed below may result in electric shock, fire and/or serious
injury.
GENERAL SAFETY WARNINGS AND INSTRUCTIONS
• The unit was designed for household use only.
WARNING – TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, BURST HAZARD, OR
INJURY TO PERSONS OR PROPERTY:
• Avoid dangerous environments. Don't use the battery charger in damp or wet locations. Do
not expose the battery charger to rain or snow.
• Keep children away. Keep away from children. This is not a toy!
• Store indoors. When not in use, battery chargers should be stored indoors in dry, and high or
locked-up places – out of reach of children.
• Unplug the battery charger when not in use.
• Check for damaged parts. Any part that is damaged should be properly repaired or replaced
by manufacturer unless otherwise indicated elsewhere in this instruction manual before
further use.
SPECIFIC SAFETY INSTRUCTIONS FOR POWER CORDS
• Don't abuse cord. Never carry appliance by cord or yank it to disconnect from receptacle.
Keep cord from heat, oil, and sharp edges. Pull by plug rather than cord when unplugging
the unit.
• Ground fault circuit interrupter (GFCI) protection should be provided on the circuits or
outlets to be used. Receptacles are available having built in GFCI protection and may be used
for this measure of safety.
DANGER – Never alter AC cord or plug provided – if it will not fit the outlet, have
aproper outlet installed by a qualified electrician. Improper connection can result in a risk of an
electric shock.
Extension Cords
• An extension cord should not be used unless absolutely necessary. Use of an improper
extension cord could result in a risk of fire and electric shock, and will void warranty.
If an extension cord must be used, make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy enough to carry the current your
product will draw. An undersized cord will cause a drop in line voltage resulting in loss of
power and overheating. The following table shows the correct size to use depending on cord
BC50BS_Manual_071118.indd 4-5
length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the
gauge number, the heavier the cord.
Recommended Minimum AWG Size for Extension Cords for Battery Chargers
AC Input Rating
American Wire Gage (AWG) Size of Cord
Amperes
Length of Cord, feet (m)
Equal to or But less
25 (7.6)
50 (15.2)
100 (30.5)
150 (45.6)
greater than than
0
2
18
18
18
2
3
18
18
16
3
4
18
18
16
4
5
18
18
14
5
6
18
16
14
6
8
18
16
12
8
10
18
14
12
10
12
16
14
10
12
14
16
12
10
14
16
16
12
10
16
18
14
12
8
18
20
14
12
8
Power Cord Safety
The unit has a polarized plug (one blade is wider than the other) as a safety feature. This plug
will fit into a polarized outlet only one way. If the plug does not fit fully into the outlet, reverse
the plug. If it still does not fit, contact a qualified electrician. Do not attempt to defeat this
safety feature.
SPECIFIC SAFETY INSTRUCTIONS FOR BATTERY
CHARGERS
WARNING: BURST HAZARD: Do not use the unit for charging dry-cell batteries that are
commonly used with home appliances. These batteries may burst and cause injury to persons and
damage property. Use the unit for charging/boosting a 12 volt battery only. It is not intended to
supply power to a low-voltage electrical system other than in a starter-motor application.
• Use of accessories and attachments: the use of any accessory or attachment not
recommended by manufacturer for use with this battery charger could be hazardous.
• Stay alert. Use common sense. Do not operate this equipment when you are tired or
impaired.
• Do not operate the battery charger near flammable liquids or in gaseous or explosive
atmospheres. Motors may spark, and the sparks might ignite fumes.
• Do not operate the battery charger if it has received a sharp blow, been dropped, or has
been otherwise damaged in any way. Return it to the manufacturer for repair.
WARNING – TO REDUCE THE RISK OF ELECTRIC SHOCK:
• Never immerse the battery charger in water or any other liquid, or use when wet.
WARNING: RISK OF EXPLOSIVE GASES:
• WORKING IN THE VICINITY OF A LEAD ACID BATTERY IS DANGEROUS. BATTERIES GENERATE
EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS REASON, IT IS OF THE
UTMOST IMPORTANCE THAT EACH TIME BEFORE USING THE BATTERY CHARGER YOU READ
THIS MANUAL AND FOLLOW INSTRUCTIONS EXACTLY.
• To reduce the risk of battery explosion, follow these instructions and those published by the
battery manufacturer and manufacturer of any equipment you intend to use in the vicinity of
the battery. Review cautionary markings on these products and on the engine.
• This equipment employs parts (switches, relays, etc.) that produce arcs or sparks. Therefore,
if used in a garage or enclosed area, the unit MUST be placed not less than 18 inches above
the floor.
• THIS UNIT IS NOT FOR USE BY CHILDREN AND SHOULD ONLY BE OPERATED BY ADULTS.
WARNING: TO REDUCE THE RISK OF FIRE:
• Do not operate near flammable materials, fumes or gases.
• Do not expose to extreme heat or flames.
• If the vehicle accessory outlet fuse opens (blows) when plugging in this battery charger, do not
use this battery charger with this vehicle accessory outlet:
– Do not repeatedly replace the fuse.
– Do not replace the vehicle accessory outlet fuse with one of a higher amperage rating.
– Never attempt to patch the fuse with tin foil or wire.
Any of these actions may cause serious electrical damage and/or a fire.
CAUTION: TO REDUCE THE RISK OF INJURY OR PROPERTY DAMAGE:
• NEVER ATTEMPT TO CHARGE A FROZEN BATTERY.
• Do not charge the battery while the engine is operating.
• Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
4
• Vehicles that have on-board computerized systems may be damaged if vehicle battery is
jump-started. Before jump-starting, read the vehicle's owner's manual to confirm that external-
starting assistance is suitable.
• When working with lead acid batteries, always make sure someone is close enough to provide
immediate assistance in case of accident or emergency.
• Always have protective eyewear when using this product: contact with battery acid may cause
blindness and/or severe burns. Be aware of first aid procedures in case of accidental contact
with battery acid.
• Have plenty of fresh water and soap nearby in case battery acid contacts skin.
• If battery acid contacts skin or clothing, wash immediately with soap and water for at least 10
minutes and get medical attention immediately.
• Never smoke or allow a spark or flame in vicinity of vehicle battery, engine or battery charger.
• 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 similar metal object, to skin causing a severe burn.
• Be extra cautious to avoid dropping a metal tool onto the battery. It might spark or short-
circuit the battery or another electrical part, and that may cause an explosion.
• Never allow battery acid to come in contact with this unit.
• Do not operate this unit in a closed area or restrict ventilation in any way.
• Always turn the battery charger off by unplugging it when not in use.
• Do not open the BATTERY CHARGER — there are no user-serviceable parts inside. Opening the
battery charger will void the manufacturer's warranty.
16
• Operate battery charger only as described in this Instruction Manual.
14
• Check battery charger and components periodically for wear and tear. Return to manufacturer
14
for replacement of worn or defective parts immediately.
12
12
FIRST AID
10
10
• Skin: if battery acid comes in contact with skin, rinse immediately with water, then wash
8
thoroughly with soap and water. If redness, pain, or irritation occurs, seek immediate medical
8
attention.
8
• Eyes: If battery acid comes in contact with eyes, flush eyes immediately, for a minimum of 15
8
minutes and seek immediate medical attention.
6
• LCD liquid crystal display: If liquid crystal comes in contact with your skin: Wash area off
completely with plenty of water. Remove contaminated clothing. If liquid crystal gets into your
eye: Flush the affected eye with clean water and then seek medical attention. If liquid crystal
is swallowed: Flush your mouth thoroughly with water. Drink large quantities of water and
induce vomiting. Then seek medical attention.
WARNING: TO REDUCE THE RISK OF INJURY:
Follow these instructions and those published by the battery manufacturer and manufacturer
of any equipment you intend to use with this unit. Review cautionary markings on this product
and on engine.
SAVE THESE INSTRUCTIONS
INTRODUCTION
Congratulations on purchasing your Stanley® battery charger. Read this Instruction
Manual and follow the instructions carefully before using your new battery charger.
PREPARING TO CHARGE
1. Be sure area around battery is well ventilated while battery is being charged.
2. Remove battery completely from boat/airplane or any confined area before charging.
3. If it is necessary to remove battery from vehicle to charge, or to clean terminals, always
remove grounded terminal from battery first. Make sure all accessories in the vehicle are off,
so as not to cause an arc.
4. Clean battery terminals, taking care to avoid getting corrosive material in eyes.
5. Add distilled water in each cell until battery acid reaches level specified by battery
manufacturer. This helps purge excessive gas from cells. Do not overfill. For a battery without
cell caps (maintenance free), carefully follow manufacturer's charging instructions.
6. Study all battery manufacturer's specific precautions, such as removing or not removing cell
caps while charging, and recommended rates of charge.
7. Determine voltage of battery to be charged by referring to the vehicle manual. The unit is for
charging a 12 volt battery only.
Charger Location
• Locate charger as far away from battery as cables permit.
• Never place charger directly above battery being charged; gases from battery will corrode and
damage charger.
• Never allow battery acid to drip on charger when reading gravity or filling battery.
• Never operate charger in a closed-in area or restrict ventilation in any way.
• Marine batteries must be removed and charged on shore.
• Do not set a battery on top of charger.
Connection Precautions
• Never allow clamps to touch each other.
• Attach clamps to battery and chassis as indicated in "Battery Installed in Vehicle" steps 5 and 6,
or in "Battery Outside of Vehicle" steps 2 to 5.
Charging a battery installed in a vehicle
WARNING: A spark near the battery may cause an explosion. To reduce risk of a
•
spark near the battery:
1. Position AC and clamp cords to reduce risk of damage by hood, door, or moving engine part.
2. Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
3. Check polarity of battery posts. POSITIVE (POS, P, +) battery post usually has larger diameter
than NEGATIVE (NEG, N, –) post.
4. Determine which post of battery is grounded (connected) to the chassis. If negative post is
grounded to chassis (as in most vehicles), see 5. If positive post is grounded to the chassis, see 6.
5. For negative-grounded vehicle, connect POSITIVE (RED) clamp from battery charger to
POSITIVE (POS, P, +) ungrounded post of battery. Connect NEGATIVE (BLACK) clamp to vehicle
chassis or engine block away from battery. Do not connect clip to carburetor, fuel lines, or
sheet-metal body parts. Connect to heavy gauge metal part of the frame or engine block.
6. For positive-grounded vehicle, connect NEGATIVE (BLACK) clamp from battery charger to
NEGATIVE (NEG, N, –) ungrounded post of battery. Connect POSITIVE (RED) clamp 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.
7. When disconnecting charger, disconnect AC cord, remove clamp from vehicle chassis, and then
remove clamp from battery terminal.
8. Do not charge the battery while the engine is operating.
9. See operating instructions for length of charge information.
Charging a battery that has been removed from a vehicle
•
WARNING: A spark near the battery may cause an explosion. To reduce risk of a
spark near the battery:
1. Check polarity of battery posts. The Positive post (marked POS,P, +) usually has a larger
diameter than the Negative battery post (marked NEG, N, –).
2. Attach a 24-inch (minimum length) AWG #6 insulated battery cable to the Negative battery
post (marked NEG, N, –).
3. Connect the Positive (RED) battery clamp to the Positive battery post (marked POS, P, + or
red).
4. Stand as far back from the battery as possible, and do not face battery when making final
connection.
5. Carefully connect the NEGATIVE (BLACK) charger clamp to the free end of the battery cable
connected to the negative terminal.
6. When disconnecting charger, always do so in reverse sequence of connecting procedure and
break first connection while as far away from battery as practical.
Note:
A marine (boat) battery must be removed and charged on shore. To charge it on board requires
equipment specifically designed for marine use. This unit is NOT designed for such use.
OPERATING INSTRUCTIONS
Charging the Battery
WARNING: TO REDUCE THE RISK OF INJURY OR PROPERTY DAMAGE:
• Always disconnect the AC plug from the AC outlet first before disconnecting the
charger from the battery to be charged.
• Ensure that all installation, operating instructions and safety precautions are
understood and observed; then follow the steps outlined in the appropriate section
("Charging a battery installed in a vehicle" or "Charging a battery that has been
removed from a vehicle").
1. Plug the battery charger's power cord into an AC outlet. The LCD screen will display the
following (the clamp icon will flash, the empty battery icon and the gage without the pointer
will light):
2. The charger's battery clamps are color-coded. Red is positive; black is negative. Connect the
battery clamps correctly to the corresponding connectors on the battery posts following the
steps outlined in the "IMPORTANT SAFETY INSTRUCTION" section at the front of this manual.
Notes: If the clamps are correctly connected with regard to polarity and the unit is properly
connected to the AC outlet, the unit will be in Standby mode and the LCD screen will display
the following (the clamp icons, arrow icons, the battery icon and the gage without the
pointer light solid):
If the clamps are INCORRECTLY connected with regard to polarity, the LCD screen will display
the following (the "+" and "–" inside the battery icon and the fault icon will flash and the
clamp icons, the battery icon and the gage without the pointer will light) and a warning will
sound until the clamps are disconnected:
Unplug the charger; then remove the clamps. Reconnect the clamps properly.
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