How Thick Should Homemade Car Jumper Cables Be?

1 Answers
DelPiper
07/30/25 2:10am
For general household cars, it is recommended to use copper wires with an outer diameter of 10mm or more. Here is the relevant information: 1. Introduction: Car jumper cables are usually about 3 meters long, not too long as increased resistance will consume power; nor too short, as it will be difficult to connect. 2. Function: When a car battery is low on power, it affects the entire vehicle's power supply system, making it difficult to start the car. If the car stalls midway and cannot be restarted, calling for a tow truck can be expensive. In such cases, jumper cables from another car can be used for emergency assistance. If the battery is low on power, the car should start quickly. After starting, keep the engine running for 15 to 20 minutes to allow the alternator to recharge the battery.
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