How Thick Should Jumper Cables Be?

1 Answers
AnnieLynn
07/30/25 5:16am
Automobile jumper cables have specifications based on wire gauge, measured in square millimeters. For general household sedans, it is recommended to use copper cables with an outer diameter of 10mm or larger. Selection should be based on the vehicle's displacement: Do not randomly choose jumper cables as improper usage can easily damage the battery. The vehicle's displacement determines the appropriate jumper cables; one should not opt for cheap, unverified quality cables. Selection should also consider the car battery's current: The higher the current, the thicker the jumper cables needed. Using cables that are too thin may lead to current leakage, which not only harms the battery but also increases safety risks.
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