JU300CB ManualENSP 072208.qxp
Controls and Indicators
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Front View
1 . Built-in LED Area Light
2. Charging Port for 120 Volt AC Charging
A d a p t e r
3 . Alternator Check Indicator
4 . 12 Volt DC Outlet
5 . LED Battery Status Indicators
6 . B a t t e ry Charge Level Pushbutton
7 . Jump-Starter Power Switch
Applications
• Jump-start most vehicle batteries with a standard 12 volt DC system: small truck, car, RV, tractor, etc.
• Operate (using 5 amp rated 12 volt DC accessory outlet): 12 volt DC fans, fluorescent worklights, air inflators,
spotlights, TVs, portable radios, cassette or CD players, and more. The unit can quick-charge a cellular phone
by using the phone's 12 volt DC adapter cord.
• Illuminate areas under the hood, inside tents and work areas.
• Inflate (using inflator) tires, air mattresses, basketballs, volleyballs, and more.
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 when they are at higher temperatures. Therefore, batteries
need periodic charging to replace energy lost through self-discharge. When the unit is not in frequent use, Black
& Decker recommends the battery be recharged at least every 60 days.
Check the battery charge level by pressing the battery status button. The LED charge status display will indicate
the level of battery charge. When only one red LED lights, recharge the unit.
N o t e s : 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.
Recharging battery after each use will prolong battery life; frequent heavy discharges between recharges
and/or overcharging will reduce battery life. The battery can be recharged using either the AC or DC
Charging Adapter (see below).
9/26/08
12:47 PM
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Back View
8 . Reverse Polarity Indicator
9. Area Light Power Switch
1 0 . Air Pressure Gauge
1 1 . Inflator Power Switch
1 2 . Positive (+) Red Clamp
1 3 . Negative (–) Black Clamp
1 4 . Air Hose
1 5 . Connector (Chuck)
NOZZLES
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120 VOLT AC
C H A R G I N G
A D A P T E R
N o t e : Make sure all other unit functions are turned OFF during recharging, as this can slow the recharging
p r o c e s s .
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120 Volt AC Charging Method
The 120 Volt AC Charging Adapter is a UL listed "wall" type unit that operates from any 120 volt, 60 Hz AC supply
that has a standard North American outlet. The adapter has a barrel connector that plugs into the unit's 12 Vo l t
Recharging Port. Make sure the Jump-Starter Power Switch and Area Light Power Switch are turned OFF during
AC charging/recharging. When the 120 Volt AC Charging Adapter is plugged into the 12 Volt DC Recharging Port,
the Battery Charge Status LED Indicators will automatically light. As recharge progresses, the red LEDs will light,
one by one. Charge the unit until the three red and one green LED indicators are lit. Continue to recharge for one
to two hours, then disconnect the Charging Adapter.
N o t e : The unit cannot be overcharged using this method.
12 Volt DC Charging Method
Charging the Jump-Starter/Inflator from an external 12 volt DC power source requires the use of the 12 Volt DC
a d a p t e r. This adapter has a male DC connector at each end.
Unlike the AC recharge method, DC recharge does NOT automatically activate the Battery Status LED display.
B a t t e ry status can still be monitored by pressing the Battery Status Pushbutton.
1 .Insert the gold-tipped 12 Volt DC Charging Adapter plug into the vehicle's 12 volt DC accessory outlet.
2 .Insert the silver-tipped end plug into the 12 volt DC accessory outlet on the front panel of the unit.
3 .Charge the unit until the green FULL indicator lights when the battery status level pushbutton is pressed. DO
NOT EXCEED 4 HOURS MAXIMUM.
4 .When charging is complete, remove the charging cord and store in a safe place.
C A U T I O N S :
• To reduce the risk of property damage, do not leave the unit unattended while charging using this method.
• To reduce the risk of shortening the life of the battery; do not recharge the unit using the DC method for more
than 4 hours.
N o t e s : Make sure all functions are turned OFF during recharge as this may slow the recharging process.
Some vehicles require that the ignition be switched to the accessory outlet position in order to power the
a c c e s s o ry outlet.
Viewing Battery Charge Status
Press the Battery Status Pushbutton located on the unit's front panel. The four LEDs that make up the Battery
Status Display will light according to the unit's level of charge, where one light indicates the unit requires
recharging and all four lit indicates that the unit is fully charged and ready to operate.
JUMP-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. Connect the red clamp first, then the black clamp.
4 .Procedure for jump-starting a NEGATIVE GROUNDED SYSTEM (negative battery terminal is connected to
chassis) (MOST C O M M O N )
4 a .Connect P O S I T I V E (+) R E D clamp to vehicle battery 's positive terminal.
4 b .Connect N E G AT I V E (–) B L A C K clamp to chassis or a solid, non-moving, metal vehicle component or
body part. Never clamp directly to N E G AT I V E b a t t e ry terminal or moving part. Refer to the automobile
u s e r 's manual.
5 .Procedure for jump-starting POSITIVE GROUND SYSTEMS
N o t e : In the rare event that the vehicle to be started has a Positive Grounded System (positive battery
terminal is connected to chassis), replace steps 4a and 4b above with steps 5a and 5b, then proceed
to step 6.
12 VOLT DC
C H A R G I N G
A D A P T E R
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