Schumacher XC103 - Manual (Page 14)

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Battery Connection Indicator
If the charger does not detect a properly connected battery, the CONNECTED
LED will not light. Charging will not begin if the CONNECTED LED is
not on.
Automatic Charging Mode
When an Automatic Charge is performed, the charger switches to the Maintain
Mode (see below) automatically after the battery is charged.
Aborted Charge
If charging can not be completed normally, charging will abort. When charging
aborts, the charger’s output is shut off, all of the LEDs are turned off and the
digital display will show bad bat. In that state, the charger ignores all buttons.
To reset after an aborted charge, unplug the charger.
Desulfation Mode
If a 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 10 hours. If desulfation fails, charging
will abort and the digital display will blink.
Completion of Charge
Charge completion is indicated by the CHARGED LED . When lit, the
charger has switched to the Maintain Mode of operation.
Maintain Mode (Float-Mode Monitoring)
When the CHARGED LED is lit, the charger has started Maintain Mode.
In this mode, the charger keeps the battery fully charged by delivering a small
current when necessary. If the battery voltage drops below a preset level, the
charger will go back into Charge Mode until the battery voltage returns to the
full charge level, at which point the charger will return to Maintain Mode. The
voltage is maintained at a level determined by the BATTERY TYPE selected.
NOTE: For 12V AGM and 12V GEL CELL battery types, the CHARGED LED
might be lit before the Maintain Mode starts.
NOTE: The charger automatically switches between Charge Mode and
Maintain Mode as necessary. The CHARGED LED will cycle on when the
battery is at full charge and off when the voltage drops below a preset level
and the charger goes into Charge Mode.
Maintaining a Battery
This is a battery charger with a maintenance setting, and maintains both
6 and 12 volt batteries, keeping them at full charge. On this setting it can
charge small batteries and maintain both small and large batteries. If you
are maintaining a fully charged large battery you will be properly utilizing the
maintenance setting. However, if you were to use the maintenance setting to
charge a large battery, such as a marine deep cycle battery, that was not fully
charged you may lose some of the battery’s capacity. This would cause the
large battery to be unable to hold a charge and become useless. Therefore,
we do not recommend charging a large battery on the maintenance setting.
NOTE: The maintain mode technology utilized in Schumacher’s chargers
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 recommended.