Schumacher SI-1275A - Manual (Page 32)

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MANUAL CHARGING (MODELS SI-82-6MA AND SI-70MA)
When a Manual Charge is performed, the charger will continue to charge and will not shut
off. You must keep a visual check on the ammeter to determine when the battery is charged.
Be sure to monitor the charging process and stop it when the battery is charged. Not doing
so may cause damage to your battery or result in other property damage or personal injury.
AUTOMATIC CHARGING MODE
When an Automatic Charge is performed, the charger switches to the Maintain Mode
(see below) automatically after the battery is charged. For a battery with a starting voltage
under 1 volt, use the Manual Mode first to pre-charge the battery for five minutes, to get
additional voltage into the battery for the charger to analyze.
COMPLETION OF CHARGE (AUTOMATIC CHARGE ONLY)
When the FULL CHARGE (green) LED is lit, the charger has stopped charging and switched
to the Maintain Mode of operation. If the 12V DEEP CYCLE battery type was selected, the
CHARGED (green) LED comes on when the battery is charged enough for normal use.
MAINTAIN MODE (AUTOMATIC CHARGE ONLY)
When the FULL CHARGE (green) LED is lit, 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 battery voltage drops below a preset level, the charger will go back into
charge mode until the battery voltage returns to the full charge level, at which point the
charger will return to maintain mode. The voltage is maintained at a level determined by
the battery type selected.
NOTE: An automatic charge automatically switches between charge mode and maintain
mode as necessary. The FULL CHARGE (green) LED will cycle on when the battery is at
full charge and off when the voltage drops below a preset level and the charger goes into
charge mode. This cycle will continue, and the FULL CHARGE (green) LED will stay on for
longer periods of time as the battery becomes more fully charged. This is not applicable in
the manual charge mode.
USING THE ENGINE START FEATURE (MODEL SI-1275A ONLY)
Your battery charger can be used to jump start your car if the battery is low. Follow these
instructions on how to use the ENGINE START feature.
WARNING
Follow all safety instructions and precautions for charging your battery.
Wear complete eye protection and clothing protection. Charge your
battery in a well-ventilated area.
IMPORTANT
Using the ENGINE START feature WITHOUT a battery installed in the
vehicle could cause damage to the vehicle’s electrical system. NOTE: If
you have charged the battery and it still will not start your car, do not use the engine start
feature, or it could damage the vehicle’s electrical system.
1. With the charger unplugged from the AC outlet, connect the charger to the battery
following the instructions given in section 6 (Follow these Steps when the Battery is
Installed in a Vehicle).
2. Plug the charger AC power cord into the AC outlet.
3. With the charger plugged in and connected to the battery of the vehicle, set the charge
rate selector switch to the engine start position.
4. Crank the engine until it starts or 5 seconds pass. If the engine does not start, wait 4
minutes before cranking again. This allows the charger and battery to cool down.
NOTE: During extremely cold weather, or if the battery is under 2 volts, charge the battery
for 5 minutes before cranking the engine.
5. If the engine fails to start, charge the battery for 5 more minutes before attempting to
crank the engine again.
6. After the engine starts, move the charge rate selector switch to the OFF position and
unplug the AC power cord before disconnecting the battery clips from the vehicle.
7. Clean and store the charger in a dry location.
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.