ELAK Multi-Battery Chargers Are made for use in workshops, garages, battery support stations and stores, the place There's a necessity for charging many batteries concurrently. How Do I Join a Battery Charger-Maintainer to My Car? There's two solutions for connecting a charger-maintainer. The easiest is the usage of “alligator” clips, https://hukums.com/product-categories/car-creeper