How to Use Jumper Cables for Cars?

[ClaraFitz]

The method of using jumper cables for cars is as follows: 1. Clamp one end of the red cable to the positive terminal of the dead battery; 2. Clamp the other end of the red cable to the positive terminal of the rescue vehicle's battery; 3. Clamp one end of the black cable to the negative terminal of the dead battery; 4. Clamp the other end of the black cable to the negative terminal of the rescue vehicle's battery or a metal part of the car body; 5. Start the rescue vehicle and let the engine idle to charge the dead vehicle's battery. The reasons why a car battery does not hold charge include: 1. Incompatible rectifier; 2. Damaged generator coil; 3. Poor connection between the rectifier and the battery or fuse wiring; 4. Battery damage causing self-discharge; 5. Faulty wiring throughout the vehicle or self-discharge after turning off the ignition; 6. The car has been parked for a long time, leading to battery discharge.