The Schumacher XC103 is a fully automatic microprocessor-controlled battery charger with 100 engine start amps for emergency starting. The XC103 has two rapid charge settings and a three-amp trickle charge setting. When first turned on, the XC103 operates as a tester. Simply select a charge rate for automatic charging. When the battery is fully charged the unit will automatically switch to maintain mode.
Digital DisplayThe Digital Display gives a digital indication of voltage, % of charge or time. The display will show the battery VOLTAGE when the charger is not charging a battery. When it goes into charging mode, the display will automatically change to ON (to show charging has started) and then show the percent-of-charge of the battery being charged and either 6 or 12 (the voltage the charger determined the battery is). If you manually stop the charging process (by pressing the CHARGE RATE button) before the battery is fully charged the display will show OFF.
Charge RatesUse the 'charge rate' button to set the maximum charge rate to one of the following:
Maintain - Used to keep stored, lead-acid batteries charged. Charges and maintains small batteries. Maintains large batteries that are already fully charged.
Slow Charge Rate - Intended for charging small batteries such as those commonly used in garden tractors, snowmobiles and motorcycles. Also used to completely charge deep cycle batteries.
Fast Charge Rate - Use for charging automotive, marine and light truck batteries. Not intended for industrial applications.
Engine Start - Provides high amperage for cranking an engine with a weak or run down battery. Always use in combination with a battery.
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. The voltage is maintained at a level determined by the BATTERY TYPE selected. If the charger has to provide its maximum maintain current for a continuous 12 hour period, it will go into Abort Mode. This is usually caused by a drain on the battery, or the battery could be bad.
