How to jump a car battery

Today, jump-starting a vehicle battery is not used commonly due to the improvements in vehicle battery durability, reliability, and cranking amps. The vehicle headlights that turn themselves off also save the battery’s power. Anyway, it doesn’t mean that you will never have a dead battery problem. It is good to know always how to jump a car battery properly and safely. Here are some tips for you how to do it.

Tools you will need:

Booster cables

Safety glasses

Jump Starter / Portable Power Unit

1. Shut off the engine on both cars. Attach one of the red clips to the positive terminal of your battery. Attach the other red clip to the positive terminal of the other vehicle. Newer vehicles will not have the battery where it is easily visible, but anyway shouldn’t be any problem to attach the connections points for jumper cables. On the vehicle with the dead battery, also identify an unpainted metal surface that isn't next to the battery.

2. Connect one end of the red positive (+) jumper cable to the positive terminal on the stalled battery.

3. Connect the other red positive (+) cable to the positive terminal of the good battery.


Never let the positive and negative jumper cable clamps touch when the other ends of the cables are connected to a battery. Doing so will generate sparks.

4. Connect one end of the black negative (-) jumper cable to the negative (-) terminal of the good battery

5. Connect the other black negative (-) cable to a clean, unpainted metal surface under the disabled car’s hood. DO NOT connect to the negative post of the dead battery as an explosion could result.

6. Start the car that’s doing the jumping; run for 5 minutes before starting a dead vehicle. If the car’s engine will not turn over, trying repositioning the negative jumper cable that's on the unpainted metal surface to achieve better contact. If it still doesn't turn over, then check the vehicle's engine more detailed to make sure that the alternator delivers more amperage.

7. Remove cables in reverse order.

8. Keep the jumped car running for at least 30 minutes to give battery sufficient time to recharge.