Designed to charge 12 v 24 v lead acid batteries and 12 v lead calcium batteries used in boats cars trucks agricultural or other vehicles 12 step charging strategy up to 25 ah pulse charge using state of the art technology a charge of nearly 100 of the original capacity is achieved slightly sulphured batteries are saved deep discharge batteries are diagnosed and renewed maintenance and repair charge which extends the life expectancy and improves battery performance 10 output optio