Operating Instructions - Schumacher Electric SC1352 Owner's Manual

TOGGLE SWITCHES
These are found on the base of the unit.
ON/OFF SWITCH – Use this switch
to select between 12V Charge/Maintain, Boost and Engine Start or 24V Boost and Engine Start.
• OFF – When the switch is in this position (middle), the charger is turned off.
• 12V CHARGE/MAINTAIN, BOOST AND ENGINE START – When the switch is in this position, the Rate
Selection button can be set to either the 6<>2A Charge/Maintain, 12V Boost or 12V Engine Start.
• 24V BOOST AND ENGINE START – When the switch is in this position, the Rate Selection button can
be set to either the 24V Boost or 24V Engine Start.

11. OPERATING INSTRUCTIONS

WARNING: A SPARK NEAR BATTERY MAY CAUSE AN EXPLOSION.
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. Make sure the ON/OFF switch is set to OFF.
7. Connect the battery, following the precautions listed in sections 6 and 7.
8. Connect the charger to an electrical outlet.
9. With the charger plugged in and connected to the battery of the vehicle, set the ON/OFF switch to
the 12V Charge/Maintain/Boost/Engine Start or 24V Boost/Engine Start position.
10. Select the battery type and the desired rate.
11. Press the START button. The yellow/orange Charging/Boosting LED will light, and the display will
show ANALYZING BATTERY while the charger determines that the battery is properly connected
and the condition of the battery. See section 12 for display message details.
12. When charging is complete, press the ON/OFF switch to turn OFF, disconnect the charger from the AC
power, remove the clamp from the vehicle's chassis, and then remove the clamp from the battery terminal.
CHARGING A BATTERY OUTSIDE OF THE VEHICLE
1. Place battery in a well-ventilated area.
2. Clean the battery terminals.
3. Make sure the ON/OFF switch is set to OFF.
4. Connect the battery, following the precautions listed in sections 6 and 7.
5. Connect the charger to the electrical outlet.
6. With the charger plugged in and connected to the battery of the vehicle, set the ON/OFF switch to
the 12V Charge/Maintain/Boost/Engine Start or 24V Boost/Engine Start position.
7. Select the battery type and the desired rate.
8. Press the START button. The yellow/orange Charging/Boosting LED will light, and the display will show
ANALYZING BATTERY while the charger determines that the battery is properly connected and the
condition of the battery. See section 12 for display message details.
9. When charging is complete press the ON/OFF switch to turn OFF, disconnect the charger from the AC
power, disconnect the negative clamp, and finally the positive clamp.
10. A marine (boat) battery must be removed and charged on shore.
AUTOMATIC CHARGING MODE
When 12V Automatic Charge is performed, the charger switches to the maintain mode automatically after
the battery is charged.
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