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• 9 •
OUTPUT RATE BUTTON
Select one of the following rates:
Maintain (4A)
For charging small batteries and
maintaining fully charged large batteries.
Fast Charge (15A)
For charging automotive, marine and
light truck batteries.
Boost
Increases the voltage and sends a
quick burst of energy into the battery,
to quickly bring deeply discharged
batteries back to life.
Engine Start
Provides additional amps for cranking
an engine with a weak or run-down
battery. Always use in combination with
a battery.
START/STOP BUTTON
Begins and ends the Charge, Boost,
Engine Start, Flash Reprogram and
Memory Saver modes.
MAIN POWER SWITCH
This switch supplies power to the charger.
REPROGRAMMING
THE DEFAULT SETTINGS
(Models DSR122 and DSR124 only)
If you are satised with the default settings,
skip to Operating Instructions.
When you rst power up the charger, the
default settings are:
Display Mode – Volts
Battery Voltage – 12V
Battery Type – Standard
Output Rate – Maintain (4A)
To change the power up default settings:
1. Change to the desired Display Mode,
Battery Voltage, Battery Type and
Output Rate.
2. Press and hold both Up and Down
Arrow buttons at the same time until
the LEDs stop ashing.
3. The next time you power up the unit,
these settings will be saved and
become the startup default settings.
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
(except during Engine Start), or it could
damage 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-
ammable 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. Set Battery Voltage to 6V or 12V.
NOTE: 24V is available only on models
DSR123 and DSR124, for Boost and
Engine Start.
CAUTION:
Always visually conrm the voltage of the
battery being charged. Not doing so can
cause damage to the battery and vehicle’s
electrical system. Other property damage
or personal injury may occur.
9. Set Battery Type to STANDARD,
AGM, or GEL. (If unsure, consult the
label on the battery or the battery
manufacturer.)
10. Set Output Rate to
Maintain (4A),
Fast Charge (15A) or Boost.
11. Charging will start when the START/
STOP button is pressed and nish
automatically.
12. Charged/Maintaining (green) LED
will light when nished and charger will
maintain battery.
13. To stop the battery maintaining process,
press the START/STOP button.
14. 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 the electrical
outlet.
5. Set Battery Voltage to 6V or 12V.
NOTE: 24V is available only on models
DSR123 and DSR124, for Boost and
Engine Start.
CAUTION:
Always visually conrm the voltage of the
battery being charged. Not doing so can
cause damage to the battery and vehicle’s
electrical system. Other property damage
or personal injury may occur.
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