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10. CONTROL PANEL
DIGITAL DISPLAY
The digital display indicates the status of the battery and charger. See the Display Messages section for a
complete list of messages.
NOTE: During charging, the display will go into sleep mode and will not show the battery percentage,
alternator percentage or voltage. To turn the display back on, press the Display button.
DISPLAY MODE BUTTON
Use this button to set the function of the digital display to one of the following:
Battery % – The digital display shows an estimated charge percentage of the battery connected to the
charger’s battery clamps, when charging.
Alternator % –
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 LOW and readings above 100%
(14.6 volts) will read HI.GH. If you get a HI.GH or LOW reading, have the electrical system checked by a
qualified technician.
NOTE: The Alternator % selection is not available for 24V batteries.
Voltage – The Digital Display shows the voltage at the charger battery clamps, in DC volts.
START/STOP BUTTON
Use this button to start or stop the charging or boosting process, after the battery is properly connected and
an output or rate has been selected.
RATE SELECTION BUTTON
Use this button to select one of the following:
6<>2A CHARGE/MAINTAIN (12V only) – For charging small and large batteries. Not recommended
for industrial applications.
12V or 24V BOOST – For quickly adding energy to a severely discharged or large capacity battery prior
to Engine Start.
12V or 24V ENGINE START – Provides high amperage 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 START/STOP button, the output
current is shut off and the display will show OFF and then the battery voltage. If you press the START/
STOP button again, the current will go back on at the same setting it was when it was turned off.
LED INDICATORS
REVERSED CLAMPS (red) LED flashing: The connections are reversed.
CHARGING/BOOSTING (yellow/orange) LED lit: The charger has detected that a battery is connected,
and is performing the selected operation.
CHARGED/MAINTAINING (green) LED lit: The battery is fully charged and the charger is in maintain mode.
NOTE: See Operating Instructions for a complete description of the charger modes.
BATTERY TYPE BUTTON
Use this button to set the type of battery.
STD – 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.
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.
