Schumacher Electric SC1279, Owner'S Manual

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11. OPERATING INSTRUCTIONS
WARNING: A spark near a lead-acid
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.
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 a live grounded
120V AC outlet.
8. The green POWER LED will light.
9. Charging will begin within ten minutes
and finish automatically. (Press the
START/STOP button to begin charging
immediately.)
10. 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.
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 a live grounded
120V AC outlet.
5. The green POWER LED will light.
6.
Charging will begin within ten minutes
and finish automatically. (Press the
START/STOP button to begin charging
immediately.)
7. When charging is complete,
disconnect the charger from the AC
power, disconnect the negative clamp,
and finally the positive clamp.
8. A marine (boat) battery must be
removed and charged on shore.
CHARGE RATE
The charge rate is measured in amps.
The charger will automatically adjust the
charging current, based on battery size,
in order to charge the battery completely,
efficiently and safely. Do not use for
industrial applications.
POWER-UP IDLE TIME LIMIT
If the Start/Stop button is not pressed within
10 minutes after the battery charger is first
powered up, charging will automatically
begin, when properly connected to a battery.
AUTOMATIC CHARGING MODE
When an Automatic Charge is performed,
the charger switches to the maintain mode
automatically after the battery is charged.
BATTERY CHARGING TIMES
APPLICATION
BATTERY
SIZE
CHARGING TIME (Hours)
2A 6A 8A 10A
POWERSPORTS 6Ah 6
32Ah 15
AUTOMOTIVE 300 CCA 12
1000 CCA 30
MARINE 50Ah 15
105Ah 33
2
5
4
10
5
11
1.75
4.5
3.5
8.5
4.25
9.5
1.5
4
3
7
3.5
8
Times are based on a 50% discharged
battery and may change, depending on age
and condition of battery.
ABORTED CHARGE
If charging cannot be completed normally,
charging will abort. When charging aborts,
the charger’s output is shut off. and the
BAD BATTERY (red) LED will light.
Do not continue attempting to charge this
battery. Check the battery and replace, if
necessary.
DESULFATION MODE
Desulfation could take 8 to 10 hours. If
desulfation fails, charging will abort and the
BAD BATTERY (red) LED will light.
COMPLETION OF CHARGE
Charge completion is indicated by the
CHARGED/MAINTAINING (green)
LED. When pulsing, the charger has
switched to Maintain Mode.
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