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How To Boost a Car Battery With Booster Cables

How To Boost a Car Battery With Booster Cables

Maybe there was a day when you were in a hurry to get to your job, or you came back to your car after a super long day and found out your car battery was sleeping and your vehicle couldn’t wake up. Things like this can happen to anybody, at any moment.

But don’t worry, you can learn how to boost car battery for a little energy. This can help you get your car moving again faster than waiting for those rescue people. Keep reading to find out how you can help your car wake up safely.

Understanding the Culprit

Before we dive into the detail of boosting a car battery, let’s quickly understand why it happens in the first place. Your car battery could die due to a variety of reasons: leaving the lights on overnight, extreme temperatures, or simply an old and tired battery that’s reached the end of its life.

It’s like your battery decided it needed a vacation right when you needed it most.

Booster Cables to the Rescue

Booster cables, also known as jumper cables, are like the magical elixir that brings your car battery back to life. These cables might seem like a jumble of wires, but when used correctly, they are your ticket to getting your engine roaring once more.

Step-by-Step Guide: How To Use Booster Cable

How to jumpstart car battery With Booster Cable

Step 1: Secure the Materials

Before you get started, make sure you have all the necessary equipment at hand:

  • Booster cables: Get a set of heavy-duty cables with sturdy clamps.
  • Another vehicle: You’ll need a running car with a functional battery.
  • Safety gear: Keep a pair of gloves and safety goggles nearby.

Step 2: Position the Cars

  • Park the cars close but not touching: Position the running car close enough to the dead one so that the booster cables can reach both batteries, but avoid any physical contact between the vehicles.
  • Turn off both engines: Make sure both cars are in “park” or “neutral” and that their ignitions are turned off.

Step 3: Attach the Cables

Identify the positive and negative terminals: The positive terminal is usually marked with a “+” sign, while the negative terminal is marked with a “-” sign. It’s important to correctly identify these terminals to avoid accidents.

  • Attach the red clamp: Take the red clamp of the booster cable and attach it to the positive terminal of the dead battery.
  • Attach the other red clamp: Connect the other red clamp to the positive terminal of the live battery.
  • Attach the black clamp: Now, attach the black clamp to the negative terminal of the live battery.
  • Attach the final clamp: Lastly, attach the remaining black clamp to an unpainted metal surface on the dead car’s engine block. This will act as a grounding point and prevent sparks near the battery.

Step 4: Bring the Battery Back to Life

Start the engine of the working car: Let it run for a few minutes to charge the dead battery.

  • Start the dead car: Turn the key in the ignition of the dead car. If you hear the engine crank, that’s a good sign!
  • Remove the cables: In reverse order, remove the black clamp from the dead car’s engine block, then the black clamp from the live battery, followed by the red clamp from the live battery, and finally, the red clamp from the dead battery.

Read: Difference between Car Towing Dolly and Flatbed Recovery

Precautions When Boosting a Car Battery

  1. Mind the sequence: Always connect and disconnect the cables in the correct sequence to prevent sparks and electrical shocks.
  2. Patience is key: Let the dead battery charge for a few minutes before attempting to start the car. Rushing can lead to disappointment.
  3. Keep the engines running: After successfully starting the dead car, keep both vehicles running for a while. This helps the alternator recharge the formerly dead battery.


Next time you find yourself facing a stubbornly dead battery, take a deep breath, channel your inner mechanic, and let those booster cables work their magic. You’ll not only save the day but also impress your friends with your newfound automotive prowess!

But, if you’re not sure you can safely make the car start by yourself, it’s better to ask experts for help. And by the way (just a little mention), is always ready to assist.

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