Cobra Electronics Automobile CJS 50 User Manual

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  
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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  
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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.  
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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 isOFF.  
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 PolarityLED 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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