How to fix a dead cell in a car battery?

how to fix a dead cell in a car battery?
How to fix a dead cell in a car battery?

How to fix a dead cell in a car battery?


Imagine you are returning from a happening weekend night party at the club and suddenly your car stops. You try starting the engine twice or thrice but it doesn’t work and you are stranded in the dark on a road without much traffic. Doesn’t that sound like a Hollywood movie? It definitely does, but it can be you any winter night when you even don’t have enough warm clothes to keep the chilly winds from making your bones jingle against each other. That happens when the cells in your car battery expire and your car breaks down all of a sudden. There can be an even worse scenario.

You are all ready to leave for work on a Monday morning. You have an important meeting with the boss so you woke up early and got dressed in your best suit but the car betrays you at the last moment. However, you don’t have time to call a mechanic at that moment so you feel helpless. If you have been facing such unavoidable situations because of your car batteries, then here are few things that might help you:

  1. Detect the problem before it gets severe.

Just like illnesses in your body, the earlier the diagnosis the better it is, the same is true for your car battery. The battery is actually composed of six batteries which provide the required amperage and voltage for your car to start. The cells inside the battery are charged with the help of the alternator. If you want to know whether the cells are in good condition or not, then there are two symptoms to detect that:

  • The car takes longer to start or turn over.
  • The car starts fine but when it has been switched off for a longer while then it needs more time to start it.

If you are facing such problems, then it is time to be cautious and start taking things seriously before you have to go through the agony of a broken down car in the middle or beginning of a trip.  The best way to do so is to use a voltmeter to check if the cells are providing ample voltage. If the voltage provided is 12.4 volts or higher, then the cells are fine and the problem might be elsewhere. However, a lower voltage level indicates that one or more cells are either dead or dying.

  1. Fixing the dead cells in your battery at Home

Whenever we are faced with the problem of dead cells, the only option we find suitable is to sell it at a very tiny amount and buy new ones. However, buying new batteries is a good choice but it is not an economically viable choice.

If you want to go for a smarter option, then the best way to do so is to fix your dead cells by yourself. This will save you from the huge amount that you pay for your new batteries and also increases your batteries’ life by 5 years. Most mechanics also refurbish dead batteries and sell them at greater prices. If you are interested in reconditioning your dead batteries by yourself, then you need a few simple tools and some time from your busy routine.

  • Required Tools:

Here is a complete list of tools that will help you fix the dead cells of your car battery at home:

  • Drill
  • Screw Driver
  • Goggles
  • Distilled Water (half a gallon)
  • Neoprene Rubber Gloves
  • Battery Charger
  • Plastic Funnel
  • Turkey Blaster
  • Epsom Salt
how to fix a dead cell in a car battery?
How to fix a dead cell in a car battery?

The Procedure:

After collecting all the required tools and equipment’s, you need to prepare yourself for the process of reconditioning your car battery in a properly ventilated and fireproof area. It is important to ensure safety before you start.

  1. Bring the distilled water to boil or up to 150 degrees, then add Epsom salt to the boiling water and keep stirring. You do not have to stop before the Epsom salt is completely dissolved in the water.
  2. In order to clean your battery from inside, you can use baking soda and clean water. This will also help remove corrosion from cable connections and terminals etc. This will give the battery a brand new look so you get the same thing by spending literally nothing.
  3. You will need the screwdriver to open the cover of the battery cells. You will start by removing the top cover sealed with the battery, then remove the plastic caps and then proceed to drill holes at the impressions. Use a slightly damp towel to clean any kind of dirt and dust particles from the holes.
  4. Next you need to fill the battery with the solution that you prepared using the Epsom salt and distilled water. You should careful enough not to fill the batteries with metal funnels because metal will most likely react with the acids. After you have cautiously filled the cells, cover them with the plastic caps.
  5. After covering the battery, you need to connect the battery terminals with the charger and charge the battery slowly for 24 hours. Repeat the same process twice or thrice in order to ensure longer lifespan of the batteries.
  6. Thus, now the batteries are reconditioned and ready to be installed in your car.

Safety Procedures

It is important to keep in mind the safety precautions because without them, you can cause damage not only to the battery or the car but also to yourself. Thus, you need to ensure you have the adequate safety gear, proper storage place and are away from inflammable objects. It is also advised to keep an extinguisher close in case of any kind of emergency situation.


This do-it-yourself repairing process will make you independent by not only helping you save a lot of time and money but also helping you not to fall prey to the excuses of mechanics etc.



battery reconditioning14

battery reconditioning
battery reconditioning15