We may receive a commission on purchases made from links. One of the emergency tools you should always keep in your car is a portable jump starter. Unlike the jumper cables your parents likely stored in the trunk while you were growing up, jump starters include a battery so that you won’t need to rely on another vehicle and driver to get your engine running again. Instead, just connect your car battery with the jump starter, and you’ll be back on the road in minutes. Other options in...