Battery Reconditiong: A Step-by-Step Guide

by John Brown | Last Updated: 10/18/2019

As a car owner, you have a fair understanding of the average lifetime of your car battery and the factors that may influence your battery’s life. Your car battery will continue to perform efficiently when it has a maximum charge. However, as soon as its charge is used up, it will become ineffective.

battery reconditioning

Most car owners discard their car batteries when they are no longer efficient. However, many people have no idea that they can bring back the charging capacity of the old and dead cells of the battery and eventually bring the battery back to life. Battery reconditioning is the process through which you can revive your battery at least three times before it becomes completely useless.

So if you have a dried battery at home, don’t throw it away just yet. Read this article to find out the simple steps for battery reconditioning.

Battery Reconditioning: A Guide

In this step-by-step guide, we’ll explain to you how easy it is to recondition your battery. Before we start listing the steps, we should let you know the items you will need to carry out your battery reconditioning project.

  1. Mask
  2. Disposable rubber gloves
  3. Battery charger
  4. Funnel
  5. Baking soda
  6. Bucket
  7. Battery terminal cleaner
  8. Goggles
  9. Toothbrush
  10. Apron
  11. Voltmeter
  12. Distilled water
  13. Flathead screwdriver

All these items can be easily found at your home. In case you are missing out on anything, rush to the nearest hardware store and grab the items. Once you have your toolkit ready, have a look at the detailed procedure of battery reconditioning.

Step 1

Before you start the battery reconditioning process, don’t forget to wear the protective gear to keep yourself safe from any dangerous situation. Wear gloves, mask, apron, and goggles before you start the process. Now, make a weak solution of water and baking soda to neutralize any sudden spills.

Step 2

Now, prepare another paste-like solution of baking soda by mixing two parts soda with 1 part water. Grab a toothbrush and dip it in the solution. Now, rub the paste on the battery terminal to remove the corrosion. If the corrosion is hard, use steel wool or sandpaper to remove it thoroughly.


Once the corrosion is removed, use a voltmeter to measure the battery’s reading. If the voltage is 12.6V or higher, it indicates that your battery is in good condition. However, the reading between 10V and 12.6V will indicate that the battery requires reconditioning.

Step 4

With the help of the screwdriver, remove the battery caps and lift the battery. Now, pour out the old electrolyte solution in the bucket. Neutralize the solution by pouring 500 grams of the weak baking soda solution you made earlier.

Step 5

In the ratio of 2:1 and 1: 1, prepare a baking soda and water solution. Fill each battery cell with the solution. Once the solution is poured, lock the caps of the battery back on it. Shake the battery for up to a minute and then pour the baking soda solution in the bucket.

Step 6

Use the Epsom salt solution to replace the old battery.

Step 7

Now, recharge the battery – the process will take around 36 hours to complete – and read the voltage reading. If it is around 12.42V to 12.6V, your battery is in good condition.