Features: 6 Amp Charger and 2 Amp Maintainer. Microprocessor controlled - automatically adjusts the amperage rate to charge and maintain. Multi-state charge for added precision, safety, and battery life. For standard and AGM batteries. Auto voltage detection for 6 or 12 volt. Reverse hook-up protection - charger won't operate if clamps are reversed; LED will flash. Heavy-duty steel case. Meets highest industry standards, DOE compliant.