CJS 50
Introduction
1
Thank you for purchasing the Cobra CJS 50
jump starter/power pack. Properly used, this
Cobra product will give you many years of
reliable service.
Easy-to-use and designed for reliable
service, the CJS 50 can jump start your
vehicle and run 12V DC appliances
whenever you need power for work or play,
at home or on the road.
Jump Starter/PowerPack
Operating Instructions
The Cobra line of quality products includes:
CB Radios
®
microTALK Radios
Important: Please be sure to read and save
the entire manual before using your mobile
power pack. Any misoperation or misusing
may damage the equipment or create
hazardous conditions for the user. Please
keep this manual for future reference.
Radar/Laser Detectors
2
®
Safety Alert Traffic Warning Systems
®
HighGear Accessories
®
CobraMarine VHF Radios
What’s Included with Your CJS 50
1. Power pack with jump start cables
2. 120V AC charging adapter
Power Inverters
Accessories
3
3. Owner’s operating instructions
For more information or to
order any of our products,
please visit our website:
©2009 Cobra Electronics Corporation
Version B
Printed in China
®
Nothing Comes Close to Cobra
Part No. 480-547-P
A1
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How to Use Your
Cobra CJS 50
Contents
Introduction...........................................................................................A1
Our thanks to you
Features of This Product
•
•
•
12 Volt DC power outlet for DC
What’s included
accessories & appliances
Buttons, Switches & Indicators ..................................................A2
Customer Assistance......................................................................A3
Conventions ........................................................................................2
Safety Information ............................................................................3
Controls and Indicators...................................................................6
Operation ..................................................................................................8
12V DC appliances.............................................................................8
Operating DC appliances ...............................................................8
USB devices..........................................................................................8
Jump starting a vehicle’s engine..................................................9
Recharging the power pack battery.........................................10
Troubleshooting...................................................................................11
Specifications .......................................................................................12
Product service ....................................................................................13
Warranty Information ....................................................................... 14
LED super bright emergency
light
5V USB port to power up or
charge cellphones, PDAs or
consumer electronic devices
•
1200 Watt (300A) instant
starting power to start vehicles
•
•
Rechargeable internal battery
LED display indicates the
battery capacity
•
Reverse polarity connection
indication & alarm
•
•
On/off safety switch
Heavy duty cables and clamps
1
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Introduction
Introduction
Important Safety Instructions
WARNING: Charge unit fully prior to use.
Important: Please be sure to read and save the entire manual before using your
mobile power pack. Any misoperation or misusing may damage the equipment
or create hazardous conditions for the user. Please keep this manual for future
reference.
Keep unit clear of fire and water.
WARNING: Shock hazard.
Keep away from children. Do not insert foreign objects into the DC power
pack socket, the jump start cable port, or the ventilation hole, do not expose
this product to water, rain, snow, condensation, or spray. Do not open the
power pack expect to replace the internal battery. Have a qualified
technician perform any service work.
The following conventions are used in this manual:
WARNING Warnings identify conditions that could result in personal
WARNING: Explosion hazard
injury or loss of life.
Do not use this product where there are flammable fumes or gases, such as
in the bilge of a gasoline-powered boat, or near propane tanks. Do not use
this product in an enclosure containing automotive-type lead-acid batteries.
These batteries, unlike the sealed AGM battery in power pack, vent explosive
hydrogen gas which can be ignited by sparks from electrical connections.
When working on electrical equipment, always ensure someone is nearby to
help you in an emergency.
CAUTION Cautions identify conditions or practices that could result
in damage to the unit or to other equipment.
NOTE: These notes describe an important action item or an item that you
must pay attention to.
WARNING: Heated surface
Abbreviations and Acronyms:
Ensure at least 2” (5cm) air space is maintained on all sides of the power
pack. During operation, keep away from materials that may be affected by
high temperatures such as blankets, pillows and sleeping bags.
A
Ampere
AC
Ah
DC
LED
mA
V
Alternating Current
Amp-hours
Direct Current
light-emitting diode
milli-Ampere
Volt
WARNING: Fire hazard
Never allow jump start cables’ red and black clamps to touch each other or
another common metal conductor. This could cause damage to the unit
and/or create a sparking/explosion hazard. Always disconnect the jump start
cables from the unit after use and clip the plastic guard over the jump start
cable port.
Jump start cable clamps must be connected positive to positive (red clip to
battery “+”) and negative to negative (black clip to battery “-“or engine
ground). A reverse polarity connection (positive to negative) may cause
damage to the unit and/or create a sparking/explosion hazard.
W
Watt
2
3
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Introduction
Introduction
7. Someone should be within range of your voice, or close enough to come to
your aid when you work near batteries.
WARNING: Fire hazard
The jump start feature is designed for short term operation only- less than 5
seconds. Operating the jump start feature for more than 5 seconds may
cause damage to the unit. Allow the power pack to cool down for at least 3
minutes after each jump start.
8. Have plenty of fresh water, soap and a supply of baking soda on hand in
the area of the batteries in case of contact with battery acid. Baking soda
neutralizes lead acid battery electrolyte.
WARNING: Risk of explosion, fire or burns
9. The product is supplied with a rechargeable, sealed lead acid battery. This
battery is self contained and not consumer replaceable. Batteries must be
disposed of properly when they no longer hold a charge. Proper charging
practices will increase the life of the batteries.
The battery terminals exposed at the jump start cable port have enough
energy present to cause a spark, creating an explosion hazard, or to cause
burns if a metal object contacts both terminals. Always clip the plastic guard
over the port when not in use.
For information on battery recycling call toll free 800-822-8837.
CAUTION: Equipment damage
Do not expose the power pack to temperatures over 104° F(40° C) or under
14° F(-10° C).
Precautions when working with batteries
WARNING: Explosion and fire hazard
1. Follow all instructions published by the battery manufacturer and the
manufacturer of the equipment in which the battery is installed.
2. Make sure the area around the battery is well-ventilated.
3. Never smoke or allow a spark or flame in vicinity of the engine or
batteries.
4. Be careful not to drop a metal object on the battery or allow a metal tool
to simultaneously touch the positive and negative cable ends or battery
terminals. It might spark or short-circuit the battery or other electrical
parts and cause an explosion.
5. Remove personal metal items such as rings, bracelets, necklaces, and
watches when working with batteries. Batteries produce a short-circuit
current high enough to weld a ring or other similar objects to metal,
causing a severe burn.
6. If you need to remove a battery, always remove the negative terminal
from the battery first. Make sure all accessories are off so you don’t cause
an arc.
4
5
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Introduction
Controls and Indicators:
Introduction
Red LED indicates jump start connection to battery
9. Reverse polarity
indicator
is incorrect.
1. USB power port
Provides 5 volt output voltage for consumer
electronics devices.
10. LED lights
Four white LED lights for emergency use.
11. 12V DC socket
Easy-access output port to charge 12V accessories.
2. USB power indicator Illuminates when USB port is in use.
Note: The unit contains 15A fuse for over current protection.
3. USB/LED power switch If the switch is flipped left, the USB port can
provide power. Flipped right, the white LED lamps
illuminate. Center position, the USB port and LED
lamps are off.
Note: It is recommended that you use the unit to power 12V accessories less
than 8A.
12. Jump start power
switch
Turn this switch after connecting to vehicle to
jump start battery.
4. Charging indicator
2-color LED indicator. When the battery is being
charged, this LED indicator lights red, when the
battery is fully charged, the LED indicator lights
green.
13. Red battery clamp
Positive connector for jump starts.
14. Black battery clamp Negative connector for jump starts.
Note: Be sure that the jump start switch is in off position prior to connecting
clamps to vehicle’s battery. Attach clamps properly to battery (red to positive post,
and black to negative chassis ground) before turning jump start switch to on.
5. Charging jack
Charge the battery in the unit by inserting the
connector from the AC charging adapter into this jack.
15. Portable handle
For convenient handling of unit.
6. Battery level indicators:
16. AC charging adapter: Input voltage: 120V AC
Output voltage: 13.5V DC
Battery Value
U<12.2V
Display Mode
Input current: 0.3A
Only red LED indicator lights.
Red and yellow LED light.
Note: It is recommended that you charge the interior battery using the AC
charging adapter, which offers charge protection.
12.2V<U<12.4V
12.4V<U<12.6V
U>12.6V
Red, yellow and one green LED light.
Red, yellow and two green LED all light.
Note: It is recommended that you should check the battery voltage every 30
minutes during charging.
7. Battery level button When pressed, indicates the battery charge levels.
8. Battery connection Green LED indicates connection to a battery
indicator
is correct.
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Operation
Operation
To jump start a vehicle:
1. Turn off the vehicle and all accessories.
2. Place the unit on a flat and stable surface near the battery which need to be
started. Ensure that the unit’s jump start power switch is“OFF”.
3. Connect the red positive (+) clamp of the cables to the positive (+)
terminal of the engine battery.
12V DC appliances
The power pack can operate one 12V DC auto, RV, marine, or other portable DC
appliance that draws 10 amps or less from its DC socket. The combined load
must not exceed 120 W, The less combined wattage used, the longer the power
pack will operate before recharging is required.
Operating DC appliances:
1. Check battery status to ensure the battery is fully charged.
2. Open the DC socket.
3. Plug the DC appliance into the DC socket.
4. Turn the DC appliance ON.
5. Recharge the power pack immediately after use.
4. Connect the black negative (-) clamp of the cables to the engine block,
cylinder head, or other stationary heavy metal part of the motor. If the red
“Reverse Polarity”LED illuminates, then reverse polarity has been detected.
Correct polarity must be established before proceeding. Disconnect the
jump starting clamps from the vehicle’s battery and repeat steps (3) and (4).
5. Switch on the jump start power switch. Before starting the engine, make
sure the jumpstarter pack and the cables are clear of the metal parts and
other moving things.
USB Devices
The power pack can charge or power one USB-chargeable device through its
USB port. Compatible devices include most MP3 players, PDAs, digital cameras,
and camcorders that have internal batteries which can be charged via the USB
port of a desktop/laptop computer.
6. Crank the engine for 5 seconds or until it starts, whichever is first.
WARNING: Fire hazard
Do not try to start the engine for more than 5 seconds. The jump start
feature is designed for short term operation only. Operating the jump
starting feature for more than 5 seconds may cause damage to the unit.
Allow the unit to cool down for at least 3 minutes after each start attempt.
USB-chargeable devices usually include a special USB cable (not supplied) that
attaches one end to the USB port and the other end to the device.
Jump starting a vehicle’s engine
You can use the power pack to jump start a vehicle (or boat engine) that has a
12V starting battery using the jump start cables supplied with the unit.
7. Switch off the jump start power switch.
8. Remove the red positive (+) clamp and then the black negative (-) clamp.
WARNING: Fire Hazard
A reverse polarity connection may cause damage to the unit and/or create a
sparking/explosion hazard. Never allow cables’ red and black clamps to touch
each other or another common metal conductor. The connection of the cables
to the vehicle’s battery terminals must be positive to positive (red clamp to
battery “+”) and negative to negative (black clamp to battery “-“ or vehicle
chassis).
NOTE: Carefully follow these instructions for jump starting your vehicle as they
may be different from the instructions supplied with other jump start products
or cables.
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Operation
Troubleshooting
Solution
Problem
Cause
Recharging the power pack battery
CAUTION: Do not operate DC appliance while the power pack is
being charged.
The power pack can not jump The battery in the power pack Charge it for at 23 hours
start vehicle
is not fully charged
Charging with the AC charging adapter
Using the AC charging adapter is the simplest method for recharging the
battery. While charging from an AC source, the charging status LED indicator
will light red. When the battery has reached capacity, the indicator will light
green. Charging when the battery is fully discharged takes around 23 hours.
The engine start capacity
exceeds the power pack jump
start capacity.
NOTE: Recharge the mobile power pack as soon as possible after each use.
The power pack’s battery has Replace the power pack’s
When not used the power pack, it should be recharged every 3 months!
been damaged
battery (consult service
technician).
To recharge with AC charger:
1. Turn the rotary switch to the “OFF” position.
The charging status LED
indicator does not light.
No AC power at the AC wall
outlet.
Ensure power is available at the
AC wall outlet.
2. Plug AC charging adapter into charging jack on the front of the unit.
3. Plug AC charging adapter into 120V AC electrical outlet.
4. Continually charge until the battery is fully charged.
AC charging adapter is faulty. Replace 120V AC charger
The AC charger’s output is Replace the AC charger
CAUTION: Full charging time for the unit assumes that there is 120V at the
AC wall outlet. If the voltage is less than 120V AC, it may require more time to
fully recharge the internal battery. Once fully charged, the charging current
automatically reduces to a floating charge mode, and the unit may be left
permanently connected to the AC charger.
The charging status LED
indicator still lights red and has too low.
not charged to steady after 50
hours of charging.
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Specifications
12 DC Power:
Product Service
For any questions about operating this new Cobra product, or if parts are
missing…PLEASE CALL COBRA FIRST…do not return this product to the store.
See customer assistance on page A3.
Internal battery (Capacity/Type)
7Ah/12V sealed lead-acid battery
DC power socket (maximum continuous load) 8A with automatic reset
If your product should require factory service, please call Cobra first before
sending your unit. This will ensure the fastest turn-around time on your repair.
You may be asked to send your jumpstarter/power pack to the Cobra factory.
DC fuse
15A
Battery:
It will be necessary to furnish the following to have the product serviced and
returned.
No load current draw
Operating temperature range
Storage temperature range
<0.5A
14°F~104°F (-10°C~40°C)
-4°F~158°F (-20°C~70°C)
1. For warranty repair include some form of proof-of-purchase, such as a
mechanical reproduction or carbon copy of a sales receipt. If you send the
original receipt, it cannot be returned.
Internal battery charging controller system:
AC charging bulk charging current
Peak charging voltage (nominal)
2. Send the entire product.
300mA
3. Enclose a description of what is happening with the jump starter/power
pack. Include a typed or clearly printed name and address of where the unit
is to be returned.
14.2V 0.2V
12.9V 0.2V
Charging restart voltage (nominal)
4. Pack unit securely to prevent damage in transit. If possible, use the original
packing material.
Physical Specifications:
Jumpstarter cables (size/length)
Dimensions H*W*D
8.37mm2/(460 19.5)mm
12.75” H x 9.5” W x 3.75” D
(330.2mm x 309mm x 114.3mm)
7 lbs., 6.7 oz. (3.3g)
5. Ship prepaid and insured by way of a traceable carrier such as United Parcel
Service (UPS) or Priority Mail to avoid loss in transit to:
Cobra Factory Service
Weight
Cobra Electronics Corporation
6500 West Cortland Street
Chicago, Illinois 60707 USA.
6. If the jumpstarter/power pack is in warranty, upon receipt of your unit, it
will either be repaired or exchanged depending on the model. Please allow
approximately three to four weeks before contacting Cobra for status. If the
unit is out of warranty, a letter will automatically be sent informing you of
the repair charge or replacement charge.
If you have any questions, please call 773-889-3087 for assistance.
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