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What Gauge Wire is Needed for Car Jumper Cables?

1 Answers

VonChloe

07/30/25 3:43am

Car jumper cables require 25 square millimeter pure copper wires. Correct operation for jump-starting: Before connecting the cables, always turn off the engine first. When the battery is dead, never repeatedly attempt to start the car as this will drain the battery's remaining power completely; Take out your own jumper cables or borrow one positive and one negative cable from another vehicle; Connect one end of the first cable to the positive terminal of the dead battery and the other end to the positive terminal of the live battery; Take the second cable, first connect it to the negative terminal of the live battery, then connect the other end to the engine block of the dead vehicle; After connecting the cables, start the live vehicle to provide stable voltage to the dead car. Pressing the accelerator can speed up the charging process. Precautions for car jumper cables: After a successful jump-start, the battery needs to be recharged. Let the vehicle idle for 3-4 hours or drive for 3-4 hours to fully charge the battery. If you turn off the vehicle too early, the battery won't be fully charged and you won't be able to start the car next time. This is very important to remember.

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