Cold starter, battery charger and battery conditioner * 50 amp instant engine start * 10 amp boost mode * 6<>2 amp smart charge/maintain mode * Built for rugged use * Perfect for everyday engine starting and charging * Microprocessor controlled automatically adjusts the amperage rate to charge and maintain * Float mode monitoring automatically maintains optimum battery charge * Hook-up protection charger will not operate if clamps are wrong Save just one battery and it more than pays for itself!