Schumacher SC1393 Owner's Manual page 5

NOTE: During charging, the display will
go into sleep mode and will not show the
percentage of charge or voltage of the
battery. To turn the display back on, press
any button.
Battery % – The digital display shows
an estimated charge percentage of the
battery connected to the charger's battery
clamps.
Voltage – The digital display shows
the voltage at the charger battery clamps,
in DC volts.
RATE SELECTION BUTTON
Use this button to select one of the following:
– For charging small batteries, such as
those commonly used in garden tractors,
snowmobiles and motorcycles. Also used
to maintain fully charged large batteries.
– For charging automotive, marine
and light truck batteries. Not intended for
industrial applications.
11. OPERATING INSTRUCTIONS
WARNING: A spark near the battery may
cause an explosion.
IMPORTANT: Do not start the vehicle with
the charger connected to the AC outlet, or
it could result in damage to the charger.
NOTE: This charger is equipped with
an auto-start feature. Current will not be
supplied to the battery clamps until a
battery is properly connected. The clamps
will not spark if touched together.
CHARGING A BATTERY
IN THE VEHICLE
1. Turn off all the vehicle's accessories.
2. Keep the hood open.
3. Clean the battery terminals.
4. Place the charger on a dry, non-
flammable surface.
5. Lay the AC/DC cables away from any
fan blades, belts, pulleys and other
moving parts.
6. Connect the battery, following the
precautions listed in sections 6 and 7.
7. Connect the charger to an electrical
outlet.
8. Select the battery type and charge rate.
9. When charging is complete,
disconnect the charger from the AC
power, remove the clamps from the
vehicle's chassis, and then remove
the clamp from the battery terminal.
BATTERY TYPE BUTTON
Use this button to select the battery type.
– Used in cars, trucks and
motorcycles, these batteries have
vent caps and are often marked "low
maintenance" or "maintenance-free".
This type of battery is designed to deliver
quick bursts of energy (such as starting
engines) and has a greater plate count.
The plates are thinner and have somewhat
different material composition. Regular
batteries should not be used for deep-cycle
applications.
– The Absorbed Glass Mat construction
allows the electrolyte to be suspended
in close proximity with the plate's active
material. In theory, this enhances both the
discharge and recharge efficiency. The
AGM batteries are a variant of Sealed
VRLA (valve regulated lead-acid) batteries.
Popular uses include high-performance
engine starting, power sports, deep-cycle,
solar and storage batteries.
CHARGING A BATTERY
OUTSIDE OF THE VEHICLE
1. Place battery in a well-ventilated area.
2. Clean the battery terminals.
3. Connect the battery, following the
precautions listed in sections 6 and 7.
4. Connect the charger to the electrical
outlet.
5. Select the battery type and charge rate.
6. When charging is complete,
disconnect the charger from the AC
power, disconnect the negative clamp,
and finally the positive clamp.
7. A marine (boat) battery must be
removed and charged on shore.
CHARGE RATE
The charger will automatically adjust the
charging current, based on battery size,
in order to charge the battery completely,
efficiently and safely.
BATTERY CHARGING TIMES
Times are based on a 50% discharged
battery and may change, depending on age
and condition of battery.
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