Calculating Charge Time - Schumacher SI-200A Owner's Manual

Automatic battery charger

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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 8 to 10 hours. If desulfation fails, charging

will abort and the CHECK BATTERY LED 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.

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. This cycle will continue, and the

CHARGED LED will stay on for longer periods of time as the battery becomes

more fully charged.

Maintaining a Battery

The Schumacher SI-200A is a battery maintainer that maintains 12 volt

batteries, keeping them at full charge. 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 battery charger. However, if you

were to use this battery charger 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 with this unit.

NOTE: The maintain mode technology utilized in Schumacher maintainers

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.

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