How Long After Jump-Starting Can You Turn Off the Engine?

[Aurora]

After jump-starting the car, you should wait at least 30 minutes before turning off the engine. Here are some precautions for jump-starting a car: 1. Check the labeled voltage of both vehicles: The label is usually on the battery. If the rescue vehicle's voltage is insufficient, it may not work, and if the voltage is too high, it may damage the rescued vehicle. 2. Pay attention to the positive and negative terminals: Never reverse the connections—remember, positive to positive and negative to negative. Connecting positive to negative can cause a short circuit. 3. Clamp the positive terminal vertically: Do not clamp horizontally. Clamping vertically ensures direct contact with the electrode, which is made of soft lead, providing a larger contact area with the clamp. Otherwise, sparks may occur. 4. Remove the cables: Remove them one by one, not both electrodes on the same side simultaneously. Generally, removing the cables is the reverse of connecting them—remove the black cable first, then the red one.