How to Revive a Dead Car Battery

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  • 1 hours
  • Beginner
  • 2-50
What You'll Need
Car with running battery
Wire brush
Jumper cables
Baking soda
Old toothbrush

A dead car battery usually occurs when the car owner leaves the headlights on. When this happens, you do not need to dispose of the dead car battery right away, especially if it is fairly new. All you need to do is recharge it. However, to avoid draining your car battery, remember to check your car before leaving it in your garage or the parking lot.

Below is a step-by-step procedure on how you can revive a dead car battery. It is not necessary for the dead car battery to be removed from your car, so leave it where it is. Just be careful not to let the battery clamps on the jumper cable touch any part of the dead battery during this stage.

Step 1: Clean the Terminals

Open the hood of your own car and get the wire brush. Clean the terminals of your car’s dead battery using the wire brush. Brush the terminals gently to remove any dirt particles that might have settled there. Doing this will ensure that the charge will flow more efficiently to your car’s dead battery later on. Leave the hood open.

Step 2: Get a Working Battery

Start the engine of the other car with a working battery, and drive it to the side of your own car. When they are side by side, stop the car but don’t turn off the engine. Get out of the car and open the hood while the engine is still running.

Step 3: Connect the Two Batteries

At this point, there should be two cars with open hoods in front of you. Get the jumper cable. Again, be very careful in handling this cable. Never let it touch the car batteries just yet.

Keep the battery clamps away from each other. Connect one red battery clamp to the positive terminal of the working battery. Do the same to the other red clamp, this time to the dead battery. Afterwards, connect one black battery clamp to the negative terminal of the working battery. Do the same to the other black clamp, this time to the dead battery. Be careful not to mix these up, or else, you'll end up with an explosion.

Wait for a few minutes while the working car battery recharges your car's dead battery.

Step 4: Start the Car

Try to start your car. If your car starts, safely remove the jumper cables from both car batteries, making sure that they do not touch anything else. Leave your car engine running.

Step 5: Clean the Clamps

Before packing up your jumper cables for storage, dissolve a teaspoon of baking soda in water. Clean the clamps of the jumper cable by using the baking soda mixture and brushing it gently with an old toothbrush. Dry it and then keep it in a safe and dry place so that it won’t corrode.