Jumper cables are an essential tool to have on hand for drivers. These cables are used to start a dead battery by connecting to a live battery. However, there are several other terms that can be used to refer to this important tool. Some people call them booster cables, while others use terms like battery cables, or simply cables. Some people also refer to them as jump leads. These alternative terms all refer to the same item used for starting a car, truck, or other vehicle with a dead battery. Regardless of the term used, jumper cables are a must-have item for any motorist.