The DeWalt 20V Lithium Simple Start Battery Booster is powerful enough to jump-start most vehicles in minutes, and compact enough to tuck away into the corner of a toolbox, the company says. The 20V booster uses the same battery packs as other DeWalt tools. Users connect a charged 20V lithium battery pack and are able to start cars or recharge portable electronics such as a laptop, cellphone or tablet. This product includes a built-in, high-intensity LED worklight.