Using Your Battery Charger; Completion Of Charging; Desulfation/Maintain Modes - Schumacher SpeedCharge 1200A Owner's Manual

Fully automatic microprocessor controlled battery charger with battery tester for 12-volt batteries
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OVERVIEW
Using the battery charger is very simple.
First, connect the battery and AC power
following the precautions listed under
"OPERATING INSTRUCTIONS". Then
select the appropriate BATTERY TYPE
and CHARGE RATE for your battery.
The charger will then do everything
automatically. This section explains a
few details.
CHARGING: If the charger does not
detect a properly connected battery, the
CHECK (red) LED will light continuously
until a battery is detected. Charging will
not begin while the CHECK light is on.
When charging begins, the CHARGING
LED will be lit.
AUTOMATIC SHUT OFF: When the 2A,
8A, or 12A charge rate is selected, the
charger is set to perform an automatic
charge. When an automatic charge is
performed, the charger stops charging
automatically after the battery is fully
charged.
ABORTED CHARGE: If charging can't
be completed normally, charging will be
aborted. When charging is aborted, the
charger's output is shut off and the red
CHECK LED and digital meter blink on
and off (at opposite times). In that state,
the charger ignores all buttons. To reset
from after an aborted charge, either
disconnect the battery or unplug the
charger.
DESULFATION MODE: If a battery is
left discharged for an extended period, it
could become sulfated and not accept a
normal charge. If the charger detects a
sulfated battery, the charger will switch
to a special mode of operation designed
for such batteries. Activation of the

USING YOUR BATTERY CHARGER

special desulfation mode is indicated by
blinking the CHARGING LED. If
successful, normal charging will resume
after the battery is desulfated. The
CHARGING LED will then stop blinking
and light continuously. Desulfation could
take up to 10 hours. If desulfation fails,
charging will be aborted and the CHECK
(red) LED will blink.
COMPLETION OF CHARGING: Charge
completion is indicated by the
CHARGED (green) LED; when lit, the
charger has stopped charging and
switched to the Maintain Mode of
operation.
MAINTAIN MODE: When the
CHARGED (green) LED is lit, the
charger has started Maintain Mode. This
mode of operation is also known as
Float-Mode Monitoring. In this mode,
the charger keeps the battery fully
charged by delivering a small current,
when necessary. The voltage is main-
tained at a level determined by the
BATTERY TYPE selected.
GENERAL CHARGING NOTES:
The charger is designed to control its
cooling fan for efficient operation.
Consequently, it is normal for the fan to
start and stop when maintaining a fully
charged battery. The fan does not
normally run in Tester Mode.
If the charge mode is changed after
charging has started (by pressing the
CHARGE RATE or BATTERY TYPE
button), the charging process will be
restarted.
The voltage displayed during charging is
the charging voltage and usually will be
higher than the battery's resting voltage.
11

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