How to Jump Start a Car Battery: The Ultimate DIY Guide

How to Jump Start a Car Battery: The Ultimate DIY Guide

Worst case scenario: you get in your car, turn the key and... nothing. Chances are your battery is dead. Don’t freak out! Jumping a car battery is easier than you think and I’m here to walk you through it.

How to Jump Start a Car Battery

What You’ll Need:

Before you start, make sure you have these items:

  1. Jumper cables – You can’t do this without them.

  2. A second vehicle with a working battery – A friend, neighbor or even a friendly stranger can help.

  3. Gloves and safety glasses (optional) – Safety first but not required.

Ready? Let’s get started!

Step 1: Park the Cars Close Together

First things first, park the cars close enough so the jumper cables can reach both batteries. Don’t let the cars touch – that’s important for safety reasons. Once you’re parked, turn both cars off and pop the hoods.

Step 2: Attach the Jumper Cables

Now it’s time to hook up the cables. Remember: Red = Positive (+), Black = Negative (-).

  1. Connect the red cable to the dead battery’s positive terminal. You’ll see a “+” or “POS” sign.

  2. Attach the other end of the red cable to the working battery’s positive terminal.

  3. Now, take the black cable and connect it to the working battery’s negative terminal.

  4. Finally, connect the other end of the black cable to an unpainted metal surface on the car with the dead battery. This could be a bolt or bracket. Don’t attach it to the dead battery’s negative terminal – it’s safer this way.

Step 3: Start the Working Car

Now that everything’s hooked up, start the car with the working battery. Let it run for a minute or two to charge the dead battery a bit. This will give it enough juice to turn over when you try to start it.

Step 4: Start the Dead Car

Now go ahead and try to start the car with the dead battery. If it starts right away, good! Let it run for 5-10 minutes.

If it doesn’t start, wait a couple more minutes and try again.

Step 5: Disconnect the Cables

Once the car with the dead battery is running, it’s time to disconnect the cables in reverse order:

  1. Remove the black cable from the metal surface of the car you just jumped.

  2. Take the black cable off the working car’s negative terminal.

  3. Remove the red cable from the working car’s positive terminal.

  4. Finally, remove the red cable from the dead car’s positive terminal.

Step 6: Drive the Car to Recharge the Battery

Now go for a drive. You should drive for at least 15-20 minutes to let the alternator charge the battery. If you can’t drive right away, just let it idle for a bit before you turn it off.


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