Schumacher SC1280, Owner'S Manual

Page: 10 / 23

• 10 •
PROBLEM POSSIBLE CAUSE SOLUTION
The BAD BATTERY LED
is lit.
The battery voltage is still
below 10V (for a 12V battery)
or 5V (for a 6V battery) after
2 hours of charging.
(or)
In maintain mode, the output
current is more than 1.5A for
12 hours.
Desulfation was
unsuccessful.
Lack of progress is detected
and battery voltage is below
14.2V (for a 12V battery) or
7.1V (for a 6V battery).
The battery’s initial voltage
is below 12.2V (for a 12V
battery) or 6.1V (for a 6V
battery) and the total input is
less than 1.5 Ah.
The battery voltage drops
to below 12.2V (for a 12V
battery) or 6.1V (for a 6V
battery) 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 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.
14. BEFORE RETURNING FOR REPAIRS
If these solutions do not eliminate the problem, or for more information
about troubleshooting, contact customer service for assistance:
services@schumacherelectric.com
www.batterychargers.com
or call 1-800-621-5485, Monday-Friday 7:00
am
to 5:00
pm
CST
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.
15. SPECIFICATIONS
Input Voltage ..................................................................................120V AC @ 60Hz, 3.6A
Output Voltage ........................................................6V or 12V, with auto voltage detection
Output Current Rating ..............................................2A DC @ 6V DC; 15A DC @ 12V DC