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• 7 •
NOTE: If the engine does turn over but
never starts, there is not a problem with
the starting system; there is a problem
somewhere else with the vehicle. STOP
cranking the engine until the other problem
has been diagnosed and corrected.
AUTOMATIC CHARGING MODE
When an Automatic Charge is performed,
the charger switches to the maintain mode
automatically after the battery is charged.
ABORTED CHARGE
If charging cannot be completed normally,
charging will abort. When charging aborts,
the charger’s output is shut off and the
BOOST/CHARGING
(yellow/orange) LED
will ash. Do not continue attempting to
charge this battery. Have it checked or
replaced.
DESULFATION MODE
Desulfation could take 8 to 10 hours. If
desulfation fails, charging will abort and
the BOOST/CHARGING
(yellow/orange)
LED will ash.
COMPLETION OF CHARGE
Charge completion is indicated by the
CHARGED/MAINTAINING (green) LED.
When pulsing, the charger has switched to
the maintain mode of operation.
MAINTAIN MODE
(FLOAT-MODE MONITORING)
When the CHARGED/MAINTAINING
(green) LED is pulsing, the charger has
started maintain mode. In this mode, the
charger keeps the battery fully charged
by delivering a small current when
necessary. If the charger has to provide
its maximum maintain current for a
continuous 12 hour period, it will go into
abort mode (see Aborted Charge section).
This is usually 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.
MAINTAINING A BATTERY
The 28.71331 charges and maintains 12 volt
batteries, keeping them at full charge.
NOTE: The maintain mode technology
allows you to safely charge and maintain
a healthy battery for extended periods
of time. However, problems with the
battery, electrical problems in the
vehicle, improper connections or other
unanticipated conditions could cause
excessive current draws. As such,
occasionally monitoring your battery and
the charging process is required.
BATTERY CHARGING TIMES
CCA = Cold Cranking Amps RC = Reserve Capacity Ah = Amp Hour
BATTERY SIZE/RATING
CHARGE RATE/TIME
6A<>2A
SMALL BATTERIES
Motorcycle, garden tractor, etc.
6-12 Ah 1½-2½ h
12-32 Ah 2½-7 h
CARS AND
TRUCKS
200-315 CCA 40-60 RC 7½-9½ h
315-550 CCA 60-85 RC 9½-12 h
550-1000 CCA 85-190 RC MAINTAIN ONLY
MARINE/DEEP-CYCLE
80 RC 12 h
140 RC MAINTAIN ONLY
160 RC MAINTAIN ONLY
180 RC MAINTAIN ONLY
Times are based on a 50% discharged battery and may change, depending on age
and condition of battery.
12. MAINTENANCE AND CARE
A minimal amount of care can keep your
battery charger working properly for years.
• Clean the clamps each time you are
nished charging. Wipe off any battery
uid that may have come in contact with
the clamps to prevent corrosion.
• Occasionally cleaning the case of the
charger with a soft cloth will keep the
nish shiny and help prevent corrosion.
• Coil the input and output cords neatly
when storing the charger. This will help
prevent accidental damage to the cords
and charger.
• Store the charger unplugged from the AC
power outlet in an upright position.
• Store inside, in a cool, dry place. Do not
store the clamps on the handle, clipped
together, on or around metal, or clipped
to the cables.
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