Jumper lead, also known as jumper cable or booster cable, is a common tool used to jumpstart a vehicle with a weak or dead battery. However, there are several synonyms for jumper lead depending on the region and context. In the UK, jumper leads are often called jump leads or start leads. In Australia and New Zealand, they are often referred to as booster cables. In the trucking industry, they may be called power cables or jump start cables. Whatever the name, the purpose remains the same, to transfer power from one vehicle to another in order to get the dead vehicle running again.