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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 these products and on engine.

INTRODUCTION

Thank you for choosing the 

300 Amp Jump-Starter

. This compact jump-starter is unique in the amount of

energy it can supply for its size. The internal battery is a high density sealed, lead-acid battery that stores and
delivers energy comparable to full sized ordinary jump-starters. Please read this guide carefully before use to
ensure optimum performance and avoid damage to the unit or items that you are using it with. 
The 

300 Amp Jump-Starter

is a compact, durable, portable jump-start system for vehicles that have a

standard 12 volt battery system. This self-contained, rechargeable system will start most vehicles without the
need for a host vehicle or 12 volt DC power supply.

FEATURES

• Keyless ON/OFF Power Switch
• Cordless/rechargeable
• Built-in non-spillable, maintenance-free, heavy duty, sealed, lead-acid battery
• Requires no maintenance (other than recharging) for optimum operation
• Heavy duty cables and  clamps
• Built-in LED Area Light
• Reverse polarity connection warning indicator
• Exclusive cable storage channels keep jumper cables out of the way until needed 
• Built-in 120 Volt AC Charger (uses a standard extension cord, not included)
• Easy-to-read LED battery charge status indicators

Controls and Indicators

CHARGING/RECHARGING

This product has a sealed lead acid battery. For maximum battery life, we recommend the Jump-Starter be kept
fully charged at all times. Recharge before first use, immediately after each use, and once a month if not used.
Failure to do this may reduce the battery life dramatically. To check the battery charge status at any time, press
the Battery Charge Level Pushbutton.

Note: 

This unit is delivered in a partially charged state – you must fully charge it before using it for the first time. Initial AC

charge should be for 24 hours.

1.NEGATIVE (–) BLACK CLAMP
2.POSITIVE (+) RED CLAMP
3.BUILT-IN 120 VOLT AC CHARGER (UNDER

PROTECTIVE COVER)

4.LED BATTERY STATUS INDICATORS
5.BUILT-IN LED AREA LIGHT
6.AREA LIGHT POWER SWITCH
7.REVERSE POLARITY INDICATOR

8.JUMP-STARTER POWER SWITCH
9.BATTERY CHARGE LEVEL PUSHBUTTON

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• Jump-start procedures should only be performed in a safe, dry, well-ventilated area.
• Always store battery clamps when not in use. Never touch battery clamps together. This can cause dangerous

sparks, power arcing and/or explosion.

• When using this unit close to the vehicle’s battery and engine, stand the unit on a flat, stable surface, and be sure

to keep all clamps, cords, clothing and body parts away from moving vehicle parts.

• Never allow 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.

a) For negative-grounded systems, connect the POSITIVE (RED) clamp to the POSITIVE ungrounded battery

post and the NEGATIVE (BLACK) clamp to the vehicle chassis or engine block away from the battery. Do not
connect the clamp to the carburetor, fuel lines or sheet-metal body parts. Connect to a heavy gauge metal part
of the frame or engine block. Refer to the automobile owner’s manual.

b) For positive-grounded systems, connect the NEGATIVE (BLACK) clamp to the NEGATIVE ungrounded

battery post and the POSITIVE (RED) clamp to the vehicle chassis or engine block away from the battery. Do
not connect the clamp to the carburetor, fuel lines or sheet-metal body parts. Connect to a heavy gauge metal
part of the frame or engine block. Refer to the automobile owner’s manual.

• If the connections to the battery’s POSITIVE and NEGATIVE terminals are incorrect, the Reverse Polarity Indicator

will light (red) and the unit will sound a beep. Disconnect clamps and reconnect to battery with correct polarity.

• Always disconnect the negative (Black) jumper cable first, followed by the positive (Red) jumper cable, except

for positive grounded systems.

• Do not expose battery to fire or intense heat since it may explode. Before disposing of the battery, protect

exposed terminals with heavy-duty electrical tape to prevent shorting (shorting can result in injury or fire).

• Place this unit as far away from the battery as cables permit.
• 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.
• 

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. 

• 

IMPORTANT:

This unit is delivered in a partially charged state. Fully charge unit with a household extension cord

(not supplied) for a full 24 hours before using for the first time. You cannot overcharge the unit using the AC
charging method.

• All ON/OFF switches should be in the OFF position when the unit is charging or not in use. Make sure all

switches are in the OFF position before connection to a power source or load.

• This system is designed to be used only on vehicles with a 12 volt DC battery system. Do not connect to a 6 volt

or 24 volt battery system.

• This system is not designed to be used as a replacement for a vehicular battery. Do not attempt to operate a

vehicle that does not have a battery installed.

• Excessive engine cranking can damage a vehicle’s starter motor. If the engine fails to start after the

recommended number of attempts, discontinue jump-start procedures and look for other problems that may
need to be corrected.

• Do not use this jump-starter on a watercraft. It is not qualified for marine applications.
• Although this unit contains a non-spillable battery, it is recommended that unit be kept upright during storage,

use and recharging. To avoid possible damage that may shorten the unit’s working life, protect it from direct
sunlight, direct heat and/or moisture.

• Read And Understand This Instruction Manual Before Using This Unit.

SAVE THESE INSTRUCTIONS

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.

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90546625 JUS300B.qxp  1/28/09  11:16 AM  Page 4

Summary of Contents for 90546625

Page 1: ...MANUAL FOR FUTURE REFERENCE Cat JUS300B Form 90546625 January 2009 Copyright 2009 Black Decker Printed in China Thank you for choosing Black Decker Go to www BlackandDecker com NewOwner to register your new product P PL LE EA AS SE E R RE EA AD D B BE EF FO OR RE E R RE ET TU UR RN NI IN NG G T TH HI IS S P PR RO OD DU UC CT T F FO OR R A AN NY Y R RE EA AS SO ON N If you have a question or experi...

Page 2: ...TION 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 ...

Page 3: ...ns to the battery s POSITIVE and NEGATIVE terminals are incorrect the Reverse Polarity Indicator will light red and the unit will sound a beep Disconnect clamps and reconnect to battery with correct polarity Always disconnect the negative Black jumper cable first followed by the positive Red jumper cable except for positive grounded systems Do not expose battery to fire or intense heat since it ma...

Page 4: ...MP STARTER This Jump Starter is equipped with an ON OFF Power Switch Once the connections are properly made turn the switch ON to jump start the vehicle 1 Turn OFF vehicle ignition and all accessories radio A C lights connected cell phone chargers etc Place vehicle in park and set the emergency brake 2 Make sure the Jump Starter Power Switch is turned to OFF 3 Remove jumper clamps from clamp tabs ...

Page 5: ...e seguridad con protección lateral que cumplan con las normas de seguridad aplicables y de ser necesario un protector facial Utilice también máscaras faciales o para polvo si la operación produce polvillo Esto se aplica a todas las personas que se encuentren en el área de trabajo Utilice también un casco protección auditiva guantes calzado de seguridad y sistemas de recolección de polvo cuando así...

Page 6: ...sible de la batería que los cables permitan Nunca permita que el ácido de la batería entre en contacto con esta unidad No opere esta unidad en un área cerrada ni restrinja la ventilación de alguna forma PRIMEROS AUXILIOS PIEL Si el ácido de la batería entra en contacto con la piel enjuáguese inmediatamente con agua luego lávese con agua y jabón Si se presenta enrojecimiento dolor o irritación busq...

Page 7: ...puente y busque otros problemas que deban solucionarse No utilice este puente auxiliar de arranque en una moto de agua No fue diseñado para prácticas marinas Si bien esta unidad contiene una batería que no derrama se recomienda que la unidad se conserve parada durante el almacenamiento el uso y la recarga Para evitar daños posibles que puedan acortar la duración de la unidad protéjala de la luz so...

Page 8: ...laridad correcta La luz zonal de diodo LED no enciende Cerciórese de que el botón CON DESC de la luz del área del LED esté en la posición de trabajo Controle que el puente auxiliar de arranque tenga la carga completa Recargue la unidad en caso de necesidad 14 4b Conecte la pinza negra del negativo al bastidor o a un componente metálico no móvil y sólido o una parte de la carrocería Nunca fije la p...

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