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Operation

Operation

9

8

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.

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.
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.

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.

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.

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.

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.

7. Switch off the jump start power switch.
8. Remove the red positive (+) clamp and then the black negative (-) clamp.

Summary of Contents for CJS 50

Page 1: ...zardous conditions for the user Please keep this manual for future reference What s Included with Your CJS 50 1 Power pack with jump start cables 2 120V AC charging adapter 3 Owner s operating instructions CJS 50 2009 Cobra Electronics Corporation Version C Printed in China Part No 480 547 P Jump Starter PowerPack Operating Instructions Introduction A1 1 2 3 The Cobra line of quality products incl...

Page 2: ...rom the date of first consumer purchase This warranty may be enforced by the first consumer purchaser provided that the product is utilized within the U S A Cobra will without charge repair or replace at its option defective jump starter power pack products or component parts upon delivery to the Cobra Factory Service department accompanied by proof of the date of first consumer purchase such as a...

Page 3: ...r pack battery 10 Applications Troubleshooting 11 Specifications 12 Product service 13 Warranty Information 14 Features of This Product 12 Volt DC power outlet for DC accessories appliances LED super bright emergency light 5V USB port to power up or charge cellphones PDAs or consumer electronic devices 500 peak Amps of instant starting power to start vehicles Rechargeable internal battery LED disp...

Page 4: ... qualified technician perform any service work WARNING Explosion hazard 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 ignit...

Page 5: ... 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...

Page 6: ... lights 12 2V U 12 4V Red and yellow LED light 12 4V U 12 6V Red yellow and one green LED light U 12 6V Red yellow and two green LED all light 9 Reverse polarity Red LED indicates jump start connection to battery indicator is incorrect 10 LED lights Four white LED lights for emergency use 11 12V DC socket Easy access output port to charge 12V accessories Note The unit contains 15A fuse for over cu...

Page 7: ...minals 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 To jump start a vehicle 1 Turn off the vehicle and all accessories 2 Place the unit on a flat and stable su...

Page 8: ...it 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 Problem Cause Solution The power pack can not jump start vehicle The battery in the power pack ...

Page 9: ...wer pack to the Cobra factory It will be necessary to furnish the following to have the product serviced and returned 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 2 Send the entire product 3 Enclose a description of what is happening with the jump starter power...

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