6/3a, 6/12v, fully automatic battery charger, automatically adjusts the amperage to charge & maintain, multi stage charging for added precision, safety & battery life, 6/12v auto voltage detection, reverse hook up protection, charger will not operate if clamps are reversed, micro processor controlled, led will flash, energy efficient, ideal for charging automotive, power sports, & marine batteries, 6 power cord, 1 year warranty, 50 state doe compliant.