The Schumacher SC1305 Fully Automatic Battery Charger/Engine Starter is designed for engine starting, charging, and rugged use, with 50A engine start; 10A boost mode; and 6<>2A charging and maintaining. This unit is microprocessor controlled to automatically adjust the amperage rate to charge and maintain, with multi-stage charging for added precision, safety and battery life. Features float mode monitoring to automatically maintain optimum battery charge, as well as reverse hook-up protection so charger won't operate if clamps are reversed; LED indicator will flash. Includes heavy-duty steel case. Schu Eco Energy meets the highest industry standards. DOE compliant. Contents: (1) Schumacher SC1305 (1) manual.