• 9 •
PROBLEM
POSSIBLE CAUSE
SOLUTION
The battery in the jump
starter won’t hold a charge.
The battery is bad (will not accept
a charge).
Have the battery checked.
The jump starter alarm
is on.
The connections to the battery
are reversed.
(Models CJP400, CJP550, CJP700)
The electrical system is 24 volts.
The internal battery voltage of the
jump starter is getting low.
Disconnect the jump starter from the
battery and reverse the clips.
Disconnect the jump starter immediately.
Recharge the jump starter as soon as
possible.
Charger
PROBLEM
REASON
SOLUTION
All three LEDs come on for
2 seconds, then turn off.
The charger is plugged into an AC
outlet.
No problem; this is normal.
The green POWER LED
does not light when charger
is properly connected.
AC outlet is dead.
Poor electrical connection.
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and extension
cord for a loose fitting plug.
The red
BAD
BATTERY LED is lit and
yellow/orange
LED is
flashing.
The battery voltage is still below
10V after 2 hours of charging.
(or)
In maintain mode, the output current
is more than 1.5A for 12 hours.
Desulfation was unsuccessful.
The battery may be defective. Make
sure there are no loads on the
battery. If there are, remove them.
If there are none, have the battery
checked or replaced.
The battery may be defective. Have
battery checked or replaced.
The red
BAD
BATTERY LED is lit.
The battery is sulfated.
Lack of progress is detected and
battery voltage is below 14.2V.
The battery’s initial voltage is below
12.2V and the total input is less than
1.5 Ah.
The battery voltage drops below
12.2V during Maintain Mode.
The charger is in desulfation mode.
Continue charging for several hours.
If not successful, have the battery
checked.
The battery may be overheated. If so,
allow the battery to cool. The battery
may be too large or have a short circuit.
Have battery checked or replaced.
The battery capacity is too low, or the
battery is too old. Have it checked or
replaced.
The battery won’t hold a charge.
May be caused by a drain on the
battery or the battery could be bad.
Make sure there are no loads on the
battery. If there are remove them.
If there are none, have the battery
checked or replaced.
10. BEFORE RETURNING FOR REPAIRS
If these solutions do not eliminate the problem,
or for more information about troubleshooting, call:
Schumacher Electric Corporation Customer Service
1-800-621-5485
Return all products under warranty to your local NAPA Auto Parts Store.
