PROBLEM
The display shows
BAD BATTERY.
The display shows CHARGE
ABORTED - BAD BATTERY.
The display shows CONNECT
CLAMPS.
Short or no start cycle when
cranking engine.
15. BEFORE RETURNING FOR REPAIRS
For information about troubleshooting, contact customer service for assistance:
services@schumacherelectric.com | www.batterychargers.com | or call 1-800-621-5485
For REPAIR OR RETURN, contact Customer Service at 1-800-621-5485. DO NOT SHIP UNIT until
you receive a RETURN MERCHANDISE AUTHORIZATION (RMA) number from Customer Service
at Schumacher Electric Corporation.
POSSIBLE CAUSE
The battery is sulfated.
The battery is sulfated and
desulfation has failed.
The battery is too large for the
charger.
The clamps are not making a
good connection.
No power at receptacle.
AC cord and/or extension cord is
loose.
The clamps are not making a
good connection.
Failure to wait 3 minutes between
cranks.
The battery may be severely
discharged.
The battery is drawing more than
the engine start rate.
The charger may be overheated.
• 13 •
SOLUTION
Have the battery checked, and
replace, if necessary.
Have the battery checked, and
replace, if necessary.
You need a charger with a higher
amp rate.
Check for poor connection at battery
and frame.
Check for open fuse or circuit breaker
supplying AC outlet.
Check power cord and extension cord
for loose fitting plug.
Check for poor connection at battery
and frame.
Wait 3 minutes of rest time before the
next crank.
On a severely discharged battery,
use the 15<>40A Boost mode for few
minutes, to help assist in cranking.
Crank time varies with the amount of
current drawn. If cranking draws more
than the engine start rate, crank time
may be less than 5 seconds.
The thermal protector may have
tripped and needs a little longer to
reset. Make sure the charger vents
are not blocked. Wait and try again.