What are the steps for jump-starting a car with another car?
2 Answers
1. First, prepare a set of jumper cables, open the hoods of both vehicles, and remove the battery clamps to open the battery cover. 2. After opening, you can see the positive and negative terminals of the battery, where '+' is the positive terminal and '-' is the negative terminal. 3. Finally, connect the positive terminals of both cars together and the negative terminals together. This completes the battery jump-start. Additional details are as follows: 1. During the connection process, always remember not to connect the positive and negative terminals of the jumper cables together, and avoid letting the red positive cable touch the car body, as this can cause a battery short circuit. 2. After connection, ensure all connection points are secure. Otherwise, large sparks may occur at the connection points, potentially damaging the battery terminals and increasing circuit resistance, which may still prevent the car from starting. 3. Also, the rescue vehicle should not be turned off and should maintain an engine speed of over 2000 RPM to use the alternator's power to supplement the battery and avoid draining its own battery. 4. After the rescued vehicle starts, let it run at high speed for a while to charge the battery. If the alternator is functioning properly, about ten minutes of charging should provide enough power for one engine start. When disconnecting the jumper cables, follow the exact opposite order of the connection process.
I've been driving for over a decade and have encountered numerous jump-start situations. First, park the two vehicles nose-to-nose, turn off the engines, and confirm power is cut. Connect the red cable clamp to the dead battery's positive terminal first, then attach it to the rescue vehicle's positive terminal. The black cable should first clamp onto the rescue vehicle's negative terminal, with the other end attached to a metal part of the stalled car's engine—never directly to the battery's negative terminal. This detail is crucial, as sparks could ignite battery gases. Next, start the rescue vehicle's engine and let it idle for five minutes to charge the battery. Then attempt to start the stalled vehicle; if successful, maintain steady throttle for five minutes for charging and discharging. Finally, disconnect the cables in reverse order: first remove the stalled car's negative, then the rescue vehicle's negative; followed by the rescue vehicle's positive, and lastly the stalled car's positive. Keep gloves on throughout the entire process and ensure metal tools stay clear of the battery area for safety.
