The Schumacher SC1320 6/12V Fully Automatic Battery Charger and 6A Maintainer is perfect for your basic 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. Its float mode monitoring automatically maintains optimum battery charge. Auto-voltage detection automatically detects output. The reverse hook-up protection ensures charger will not operate if clamps are reversed, as LED indicators will flash. Compatible with standard and AGM batteries. This unit is built with a rugged case.