Suitable for 6V and 12V systems. Automatic shut off on 12V only. Polarity check light. Green indicator light to indicate complete charge. 6.5 ft power cord and 6.5 ft battery leads. 2 amp rating for smaller batteries (motorbikes, ATV's & lawn mowers) and trickle charge. 10 amp rating for normal charging. 55 amp rating for starting power. cUL approved.