• 11 •
PROBLEM
POSSIBLE CAUSE
SOLUTION
The battery is properly
connected, but the
% LEDs never lit.
The battery voltage is low.
Press the START/STOP button to start
charging.
The Bad Battery and %
LEDs are lit.
The battery is sulfated.
The charger is in desulfation mode.
Continue charging for several hours. If
not successful, have the battery checked.
The Bad Battery LED is lit. 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 voltage drops to below
12.2V in Maintain Mode.
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 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.
Short or no start cycle
when cranking engine.
Drawing more than the Engine Start
Rate.
Failure to wait 3 minutes (180
seconds) between cranks.
Clamps are not making a good
connection.
AC cord and/or extension cord is
loose.
No power at receptacle.
The charger may be overheated.
Battery may be severely
discharged.
Crank time varies with the amount of
current drawn. If cranking draws more
than the Engine Start Rate, crank time
may be less than 3 seconds.
Wait 3 minutes of rest time before the
next crank, to allow the battery and
charger to cool down.
Check for poor connection at battery
and frame.
Check power cord and extension cord
for loose fitting plug.
Check for open fuse or circuit breaker
supplying AC outlet.
The thermal protector may have tripped
and needs a little longer to close. Make
sure the charger vents are not blocked.
Wait and try again.
On a severely discharged battery,
use the Boost setting for few minutes, to
help assist in cranking.
14. BEFORE RETURNING FOR REPAIRS
For REPAIRS OR RETURNS, visit 365rma.com
Visit batterychargers.com for Replacement Parts.
15. LIMITED WARRANTY
For information on our one year limited warranty, please visit batterychargers.com
or call 1-800-621-5485 to request a copy.
Go to batterychargers.com to register your product online.
Schumacher
®
is a registered trademark of Schumacher Electric Corporation.
