FOR MAINTAINING ALL POWER SPORT, CAR AND BOAT BATTERIES. Microprocessor controlled - automatically adjusts the amperage rate to charge and maintain. Multi-stage charging for added precision, safety and battery life. Float mode monitoring - automatically maintains optimum battery charge. Reverse hook-up protection - charger will not operate if clamps are reversed. Charging status LED indicator. Schu Eco Energy - meets the highest industry standards. DOE compliant.