Booster Pac jump starters are one of the most popular automotive battery jump starting systems on the market. You'll find them in commercial auto shops all over the country, and the world. Home consumers love them for their portable feature, because they are nice and compact and light weight. They also feature premium quality clamps, not those cheap plastic clamps you'll find on those cheap, bargain models out there. These truly were made for commercial use. Powerful, yet durable.