How Long Should the Engine Run After a Jump Start Before Turning It Off?

[Autumn]

After a jump start, let the engine run for about half an hour before turning it off to ensure there is enough battery charge for the next start. When jump-starting, be sure to connect positive to positive and negative to negative to avoid reversing the polarity, which could damage the battery and cause a short circuit in the car's electrical system, potentially leading to personal injury. The steps for jump-starting a car are: 1. Connect the red cable to the positive terminal of the dead battery; 2. Connect the other end of the red cable to the positive terminal of the donor car's battery; 3. Connect the black cable to the negative terminal of the donor car's battery; 4. Connect the other end of the black cable to an unpainted metal surface (ground) on the car with the dead battery. When removing the cables, remember to disconnect the negative cable first, followed by the positive cable.