• Alternator % (12V only) – The digital
display shows an estimated output
percentage of the vehicle's charging
system connected to the charger's battery
clamps, compared to a properly functioning
system. The alternator percent range is
from 0% to 100%. Readings below 0%
(13.2 volts) will read LO and readings above
100% (14.6 volts) will read HI . If you get a
HI or LO reading, have the electrical system
checked by a qualified technician.
• Voltage – The Digital Display shows the
voltage at the charger battery clamps, in
DC volts.
RATE SELECTION
Use this button to select one of the following:
• 6<>2A CHARGE/MAINTAIN – For
charging small and large batteries. Not
recommended for industrial applications.
• 30<>12A BOOST – For quickly adding
energy to a severely discharged or
large capacity battery prior to ENGINE
START. The unit will automatically switch
to 6A<>2A CHARGE/MAINTAIN after
the 30<>12A BOOST operation has
completed.
• 80A ENGINE START – Provides
additional amps for cranking an engine
with a weak or run-down battery. Always
use in combination with a battery.
NOTE: Once the charger has started
charging the battery, if you press the Rate
Selection button once, the output current is
shut off and the display with show OFF and
then the battery voltage. If you press the
Rate Selection button again, the current will
go back on at the same setting it was when
it was turned off.
LED INDICATORS
CLAMPS REVERSED (red) LED
flashing: The connections are reversed.
CHARGING (yellow/orange) LED lit:
The charger is charging the battery.
CHARGING (yellow/orange) LED
flashing: The charger is in abort 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, 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.
CHARGED/MAINTAINING (green) LED
pulsing: The battery is fully charged and
the charger is in maintain mode.
NOTE: See the Operating Instructions
section for a complete description of the
charger modes.
BATTERY TYPE BUTTON
This selects the type of battery to charge.
• 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.
Regular 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.
• Gel – The electrolyte in a GEL cell has
a silica additive that causes it to set up
or stiffen. The recharge voltages on
this type of cell are lower than those for
other styles of lead-acid battery. This is
probably the most sensitive cell in terms
of adverse reactions to overvoltage
charging. Gel batteries are best used
in VERY DEEP cycle application and
may last a bit longer in hot weather
applications. If the wrong battery charger
is used on a gel cell battery, poor
performance and premature failure
will result.
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. For a negative-ground vehicle
(as in most vehicles), connect the
charger's POSITIVE (RED) clamp
to the POSITIVE (POS, P, +) battery
post. Next, connect the charger's
NEGATIVE (BLACK) clamp to the
• 6 •