10A CHARGE|3A MAINTAIN FOR MOST CHARGING APPLICATIONS, Microprocessor controlled automatically adjusts the amperage rate to charge & maintain, Multi-stage charging for added precision, safety and battery life, Float mode monitoring Automatically maintains optimum battery charge, Auto voltage detection 6 or 12 volt, Reverse hook-up protection Charger will not operate if clamps are reversed; LED will flash, Battery type button select Standard or AGM, Schu Eco Energy meets the highest industry standards for energy efficiency, DOE compliant.( 1-0-13006)