Operating Instructions - Matco Tools MC118 Owner's Manual

Battery charger & engine starter
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RATE SELECTION BUTTON
Use this button to select one of the
following:
• 6<>2A CHARGE/MAINTAIN –
For charging small and large batteries. Not
recommended for industrial applications.
• 15<>40A BOOST – Increases the
voltage and sends a quick burst of
energy into the battery, to quickly bring
deeply discharged batteries back to life.
• 15<>40A SERVICE – Maintains stable
voltage at 13.6V, to prevent battery
discharge during service or when idle in
a showroom. Always use in combination
with a battery.
• 125A ENGINE START – Provides
additional amps for cranking an engine
with a weak or run-down battery. Always
use in combination with a battery.
LED INDICATORS
CLAMPS REVERSED (red) LED
flashing: The connections are reversed.
CHARGING (yellow/orange) LED lit:
The charger is charging the battery.
CHARGED/MAINTAINING (green)
LED lit: The battery is fully charged
and the charger is in Maintain mode.

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.
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.
BATTERY CONNECTION INDICATOR
If the charger does not detect a properly
connected battery, charging will not start
and the digital display will show one
of two messages. If the display shows
CONNECT CLAMPS, make sure the
charger is connected to the battery
and the connection points are clean
and making a good connection. If the
display shows WARNING - CLAMPS
REVERSED, unplug the charger from the
AC outlet and reverse the connections at
the battery.
NOTE: See Operating Instructions for a
complete description of the charger modes.
BATTERY TYPE BUTTON
Use this button to select the battery type.
STANDARD – 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.
Standard batteries should not be used for
deep-cycle applications.
AGM – 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 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
mode. See Section 12 for display
message details.
9. The CHARGING (yellow/orange) 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.
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.
• 7 •

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