4 5
Model number BC40BE Contact us / 1-877-571-2391 Model number BC40BE Contact us / 1-877-571-2391
• 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 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 16
2 3 18 18 16 14
3 4 18 18 16 14
4 5 18 18 14 12
5 6 18 16 14 12
6 8 18 16 12 10
8 10 18 14 12 10
10 12 16 14 10 8
12 14 16 12 10 8
14 16 16 12 10 8
16 18 14 12 8 8
18 20 14 12 8 6
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.
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.
• 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.
• Operate battery charger only as described in this Instruction Manual.
• Check battery charger and components periodically for wear and tear. Return to
manufacturer for replacement of worn or defective parts immediately.
FIRST AID
• Skin: If battery acid comes in contact with skin, rinse immediately with water, then
wash thoroughly with soap and water. If redness, pain, or irritation occurs, seek
immediate medical attention.
• Eyes: If battery acid comes in contact with eyes, flush eyes immediately, for a
minimum of 15 minutes and seek immediate medical attention.
• 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
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.
• 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.
• Do not set a battery on top of the 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.
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 charger is now in
Standby Mode. The LCD screen will display the following (the clamp icon will flash,
the empty battery icon and the gauge 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.
IMPORTANT: 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 gauge 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 gauge 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.
3. When the unit is properly connected, press the charge/voltage button to start the
charging process. The LCD screen will display the following:
The digital display shows the output current that is charging the battery. The gauge
indicates the charge status of the battery. The clamp icons and the battery icon
light solid, the bars on the battery icon will change from empty to solid (bottom to
top) repeatedly and the arrow icons will gradually and repeatedly move downward
to the battery icon.
Notes: The “ ” icon will appear at the top right of the gauge section if the surrounding ambient
temperature is higher than approximate 40°C. The “ ” icon will appear at the top left of the
gauge section if the surrounding ambient temperature is lower than 0°C. This is not a fault code,
but indicates that the unit’s temperature compensation feature is operating.
BC40BE_ManualENSP_032620.indd 4-5 3/27/2020 11:20:35 AM
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