How Long Should You Wait Before Turning Off the Engine After Jump-Starting?

[AdelynRose]

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 voltage labels of both vehicles: The labels are usually on the battery. If the rescue vehicle has insufficient voltage, 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, 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 one by one: Remove them individually, not both terminals on the same side simultaneously. Generally, the order of removing cables is the reverse of connecting them—remove the black cable first, then the red one.