DieHard 28.71239 Operator's Manual page 10

CHARGE COMPLETION AND MAINTAIN MODE
(FLOAT MODE MONITORING)
Charge completion is indicated by the GREEN LED pulsing and the digital
display showing FULLY CHARGED AUTO MAINTAINING. This means that
the charger has stopped charging and has switched to the Maintain Mode of
operation. NOTE: 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 battery could be
bad. Make sure there are no loads on the battery. If there are, remove them. If
there are none, have the battery checked or replaced.
MAINTAINING A BATTERY
The 28.71239 maintains both 6 and 12 volt batteries, keeping them at full
charge. It is not recommended for industrial applications.
NOTE: The maintain mode technology allows you to safely charge and
maintain a healthy battery for extended periods of time. However, problems
with the battery, electrical problems in the vehicle, improper connections or
other unanticipated conditions could cause excessive current draws. As such,
occasionally monitoring your battery and the charging process is required.
DESULFATION MODE
If the battery is left discharged for an extended period of time, it could become
sulfated and not accept a normal charge. If the charger detects a sulfated
battery, the charger will switch to a special mode of operation designed for
such batteries. If successful, normal charging will resume after the battery is
desulfated. Desulfation could take up to 8 hours. If desulfation fails, charging
will abort, the GREEN LED will flash, and the display will show CHARGE
ABORTED-BAD BATTERY.
ABORTED CHARGE
If charging cannot be completed normally, charging will abort. When charging
aborts, the charger's output is shut off, the GREEN LED will flash, and the
display will show CHARGE ABORTED-BAD BATTERY. To reset after an
aborted charge, unplug the charger from the outlet, wait a few moments and
plug it back in.
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