Schumacher’s 6/12V Battery Charger and Maintainer features 200A engine start for immediate starts and a 40A boost rate for a quick energy boost. This charger is microprocessor-controlled to automatically adjust the amperage rate to charge and maintain standard and AGM batteries. Features multi-stage charging for added precision, safety, battery life. The battery and alternator tester provides charge level and helps diagnose electrical problems. Auto-voltage detection automatically detects 6 or 12 Volt batteries. Float mode monitoring automatically maintains optimum battery charge. Includes a 12-foot total reach, with 6-foot power cord and 6-foot output cables, and the 8-gauge output cables stay flexible in cold weather. Color-coded clamps ensure a solid connection on top- and side-mount battery posts. Meets the highest industry standards for energy efficiency.