The Schumacher SC-10030A automatic battery charger and maintainer is the handyman's preferred choice. This charger is equipped with an auto-start feature. It will not supply current to the battery clips until a battery is properly connected. For use with regular automotive, deep-cycle, AGM, and gel cell 6 and 12-volt batteries.
Select Battery SizeUse this button to set the maximum charge rate to one of the following:
Small Battery - provides a charge rate of up to 2A. Intended for charging small batteries such as those commonly used in garden tractors, snow mobiles and motorcycles. The 2A rate is not intended to be used as a trickle charger for larger batteries.
Large Battery - automatically switches between 12 and 30 amps or provides 12 amps continuous, depending on the battery. Use for charging medium to large capacity batteries. Not intended for industrial applications.
Engine Start - provides 100 amps for cranking an engine with a weak or run down battery. Always use in combination with a battery.
When a battery is selected the charger is set to perform an automatic charge. When an automatic charge is performed, the charger switches to the float mode automatically after the battery is charged.
Float ModeIn 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.
Desulfation ModeIf 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.
Engine StartDuring the starting sequence listed above, the charger is set to one of three states:
Wait for cranking – The charger waits until the engine is actually being cranked before delivering the 100 amps for engine start. The charger delivers charge at a rate of up to 10 amps while waiting and will reset if the engine is not cranked within 15 minutes.
Cranking – When cranking is detected, the charger will automatically deliver up to its maximum output as required by the starting system for up to 3 seconds or until the engine cranking stops.
Cool Down – After cranking, the charger enters a mandatory 3 minute (180 second) cool down state. During this period, no settings can be changed and no current is delivered to the battery.
Using the Built-In Voltage TesterThis battery charger has a built-in voltmeter to test your battery’s state of charge. The charger does not have a built in load tester. As such, a recently charged battery could have a temporarily high voltage due to what is known as “surface charge.” The voltage of such a battery will gradually drop during the period immediately after the charging system is disengaged. Consequently, the tester could display inconsistent values for such a battery. For a more accurate reading, the surface charge should be removed by temporarily creating a load on the battery, such as by turning on lights or other accessories for a couple of minutes before you read the display. Read it a couple of minutes after you have shut the headlights off.
