IDEAL FOR MAINTAINING MOTORCYCLE, CAR & MARINE BATTERIES. Microprocessor controlled ─ automatically adjusts the amperage rate to charge & maintain. Multi-stage charging for added precision, safety and battery life. Float mode monitoring ─ automatically maintains optimum battery charge. Auto voltage detection ─ 6 or 12 volts. Quick-connect harness ─ attaches either connector into place in seconds. Reverse hook-up protection ─ charger won't operate if clamps are reversed; LED will flash.