• To reduce risk of electric shock, disconnect the unit from any power source before attempting maintenance or cleaning. Turning off
controls without disconnecting will not reduce this risk.
• 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.
• Do not use this unit to operate appliances that need more than 5 amps to operate from the 12 volt DC accessory outlet.
• Do not insert foreign objects into either the USB outlet or the 12 volt DC accessory outlet.
SPECIFIC SAFETY INSTRUCTIONS FOR CHARGING THIS UNIT
• 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.
• To recharge this unit, use only the built-in AC Charger or supplied DC Charging Adapter.
• 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.
WARNING: SHOCK HAZARD
• Outdoor use extension cords. When appliance is used outdoors, use only extension cords intended for use outdoors and so marked.
• Extension cords. 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 gage. The smaller the gage number, the heavier the cord.
MINIMUM GAGE FOR CORD SETS
Volts
120V
0-25
(0-7.6m)
240V
0-50
(0-15.2m)
Ampere Rating
0'-25'
More
Not more
Than
Than
0 -
6
18
6 -
10
18
10 -
12
16
12 -
16
14
When an extension cord is used, make sure that:
• a) the pins of extension cord are the same number, size and shape as those in the charger,
• b) the extension cord is properly wired and in good electrical condition,
• c) the wire size is large enough for the AC rating of the charger.
CAUTION: TO REDUCE THE RISK OF INJURY OR PROPERTY DAMAGE: Pull cord by plug rather than cord when disconnecting the
120V AC Charging Adapter from the unit.
CAUTION: TO REDUCE THE RISK OF PROPERTY DAMAGE WHEN CHARGING USING THE 12 VOLT DC METHOD:
• Recharge using this method only when necessary. Frequent use the the 12 Volt DC charging method may shorten battery life.
• DO NOT EXCEED 6 HOURS CHARGING TIME USING THIS METHOD.
SPECIFIC SAFETY INSTRUCTIONS FOR JUMP STARTERS
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 lead-acid battery only. It is not intended to supply power to a
low-voltage electrical system other than in a starter-motor application.
• Use of an attachment not supplied, recommended or sold by manufacturer specifically for use with this unit may result in a risk of
electrical shock and injury to persons.
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 jump-starter 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.
CAUTION: TO REDUCE THE RISK OF INJURY OR PROPERTY DAMAGE:
• NEVER ATTEMPT TO JUMP-START OR CHARGE A FROZEN BATTERY.
J309_ManualENFRSP_092414.indd 4-5
Total Length of Cord in Feet
26-50
51-100
101-150
(7.6-15.2m)
(15.2-30.4m)
(30.4-45.7m)
51-100
101-200
201-300
(15.2-30.4m)
(30.4-60.9m)
(60.9-91.4m)
Extension Cord Length
26'-50'
51 '-100 '
101' -150 '
American Wire Gage (AWG)
16
16
14
16
14
12
16
14
12
12
Not Recommended
4
• 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 immediate assistance is available 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.
• Never smoke or allow a spark or flame in vicinity of vehicle battery, engine or power station
• 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.
• Do not wear vinyl clothing when jump-starting a vehicle when jump-starting a vehicle, friction can cause dangerous static-electrical
sparks.
• 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.
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.
• 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.
• 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.
FIRST AID
• SKIN: If battery acid contacts skin or clothing, wash immediately with soap and water for at least 10 minutes. 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.
SAVE THESE INSTRUCTIONS
INTRODUCTION
Congratulations on purchasing your new 300Amp Jump Starter. Read this Instruction Manual and follow the instructions carefully before
using this unit.
CHARGING/RECHARGING
Lead-acid batteries require routine maintenance to ensure a full charge and long battery life. All batteries lose energy from self-
discharge over time and more rapidly at higher temperatures. Therefore, batteries need periodic charging to replace energy lost through
self-discharge. When the unit is not in frequent use, manufacturer recommends the battery be recharged at least every 30 days.
WARNING: Never attempt to use the AC and DC charging methods at the same time.
Notes:
This unit is delivered in a partially charged state – you must fully charge it upon purchase and before using it for the first time. Initial AC charge should
be for 24 hours.
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