www.wagan.com
300 Amp Battery Jumper
™
with Air Compressor by Wagan Tech
3
© 2010 Wagan Corporation
All Rights Reserved
Wagan and wagan.com are trademarks used by Wagan Corporation
User’s Manual—Read before using this equipment
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• The charging LED indicator will illuminate while charging. The light will stay
lit while charging plug is plugged in. When charging is complete, press the
“Battery Check” button and the “Battery Status” light will show the state of the
battery charge. When charging is complete, remove the AC/DC adapter from the
unit. Press the battery status button and the green LED light will be illuminated to
indicate charging is complete.
• Do not charge the unit for more than 48 hours continuously.
• Do not charge the unit on a boat, boat ramp, or dock since the electrical cords
and outlets used for charging could cause severe electrical shock if they get wet.
• It is recommended that the unit is in an upright position while charging.
Charging with AC Charger:
1. Insert AC charger plug into charging jack of the unit.
2. Insert AC charger receptacle plug into AC receptacle.
3. Fully charge the unit.
• First time charge: 38 hours continuously
• Recharge or between use: 34-36 hours continuously
4. When charging is complete, unplug the AC charger receptacle plug then the AC
charger from the charging jack on the unit.
Charging with 12-Volt Charger:
1. Insert DC charger plug into charging jack of the unit.
2. Insert DC charger accessory plug into vehicle cigarette lighter socket.
3. Fully charge the unit for 12-14 hours continuously while the engine is running.
4. When charging is completed, unplug the DC charger accessory plug first and
then the DC charger from the charging jack on the unit.
Jump-starting a Vehicle
WARNING: Vehicles equipped with on-board computers may be affected if the engine battery
is jump-started. Read your vehicle owner’s manual before attempting to start the vehicle to
determine if external starting assistance can be used. Failure to follow these instructions may
cause damage or explosion. Use safety glasses to protect eyes while jump-starting a battery.
1. Turn off the vehicle ignition and all accessories (e.g. radios, lights, air conditioners,
and cellular phones).
2. Set the emergency brake and put vehicles with automatic transmission in park
position.
3. Determine the polarity of the vehicle’s battery terminals. The positive (POS, P,
+) battery terminal usually is larger in diameter than the negative (NEG, N, −)
terminal. If you are unsure, you should refer to the vehicle owner’s manual.
4. Determine whether your vehicle uses a negative or positive grounded system:
Negative ground system (negative battery terminal is grounded to chassis). Most
vehicles use this system. Positive grounded battery terminal is grounded to chassis
or any other part of the vehicle. IF YOU ARE UNSURE, YOU SHOULD REFER TO
VEHICLE OWNER’S MANUAL.
5. Remove clamps from the holders. Never allow clamps (positive & negative
terminals) to touch together or contact the same piece of metal to prevent short-
circuits and arcing.
6. Follow instructions for a negative grounded system or positive grounded system as
indicated below:
Negative Grounded System
a. Securely connect the positive (+) red clamp to the positive (POS, P, +) terminal
of the vehicle battery or the remote positive (+) terminal if equipped.
b. Securely connect the negative (−) black clamp to the vehicle chassis, engine
block, or a non-moving metal part of the vehicle which is verified to be
grounded. Do not clamp directly to negative battery terminal, carburetor,
fuel lines, or sheet metal body parts.
c. See jump-starting step 7 to continue.
Positive Grounded System:
a. Securely connect the negative (−) black clamp to the negative (Neg, N, −)
ungrounded terminal of the vehicle battery.
b. Securely connect the positive (+) red clamp to the vehicle chassis, engine
block, or a non-moving metal part of the vehicle which is verified to be
grounded. Do not clamp directly to positive battery terminal, carburetor, fuel
lines, or sheet metal body parts.
c. See jump-starting step 7 to continue.
7. Allow 2 to 3 minutes of charging time. It is recommended to have a second person
to assist holding the unit securely in place during the next steps.
8. Turn on the vehicle to attempt to start the engine. Stop if the vehicle does not start
after 4 to 5 seconds of engine cranking. Wait 3 to 4 minutes then try again. Repeat
several times until the vehicle starts.
CAUTION: Excessive engine cranking can damage vehicle starter motor. If the
engine turns, but fails to start after several attempts, other technical problems might
be involved. Discontinue cranking the engine until the other problems have been
determined and corrected.
