Recondition Dead Batteries | Car, Laptop, Nicad Battery

Intro: How to Recondition Batteries

Stop Throwing Away Your Old Batteries

Are you tired of constantly wasting money on new batteries? In the guide below I will show you how you can recondition your old batteries to get them working like new. Overal, it’s a very simple process and once completed you will be able to successfully restore your old batteries, so make sure to pay close attention.

There are many benefits of restoring dead batteries. Of course, the obvious one is you will save money instead of buying a new battery, you will have the ability to recondition your current battery. Another benefit is you will be helping out pollution by not throwing away your dead batteries. And the best benefit is you can start your own battery reconditioning business.

Recondition A Car Battery

battery reconditioning

I will start with the most common battery people are looking to restore: Car Batteries.

**Warning: Electrolyte’s in lead-acid battery cells are extremely dangerous so be very careful to not get in contact with the acid. Make sure to wear protective gear when working with sulfuric acid in the 12v Car Battery.**

Did you know that you can recondition your car battery with three simple steps.

You may ask yourself:

Are reconditioned car batteries good?

They won’t be 100%, but they will be very close to new at around 80% of power compared to a brand new car battery.

The first thing you should do is remove the battery from the car and take off the protective rubber caps if you have any on the battery. Remove all the caps your battery has, some may have a couple some have up to 10.

Once you have the car battery out of the car, you must prepare the battery for reconditioning. Get a steel wool and clean any corrosion on the battery terminals. You can purchase battery post cleaning solution or make your own. To make your own, you will need a tablespoon of water and 2 tablespoons of baking soda. Mix them together until the consistency is a little runny. Get a small spoon and apply the paste on the terminals and begin scrubbing the battery posts or terminals until you have removed all the corrosion on the car battery terminal.

After that fill the battery with distilled water and recharge the car battery. Keep the caps off. Charge the 12v Car Battery for a few hours and you will begin to notice bubbles coming out of the holes you removed the cap from. If you don’t see any bubbles, switch the positive and negative wires and charge for another minute or two. You should start to see it bubbling now. Once you see the bubbles, switch the cables back to the correct position and proceed to charge for a half hour.

The last step would be to try and replace the acid that is inside the battery. You can make your own acid with a mix of the acid and distilled water. Once you make your own acid, go ahead and charge the battery for a couple of hours.recondition car battery

The steps above are fairly the same if you want to recondition motorcycle battery

The key to recondition a car battery is to restore the electrolytes in the battery. The best way is to slowly charge the car battery to for 24-48 hours to make sure all the electrolytes are fully recovered.

Much like humans, batteries age and slowly lose their “juice”. Especially if you are like me and on your laptop almost all day.

Types of Laptop Batteries:

The most common type of laptop battery is Lithium Ion batteries, but some laptops use NiCad batteries.

Common Laptop Battery Problems

Loss of capacity

Over years of use, your laptop battery will slowly decline. Laptop batteries are measured in mAh, and overuse of your laptop the battery will slowly lose mAh and shrink over time making it impossible to fully charge your laptop battery.

Overheating laptop battery

If your laptop battery is getting overheated, there may be an issue with ventilation. If you could remove the bottom of your laptop and get a can of air and spray the dust out.

Swollen laptop battery

This problem is similar to your laptop battery overheating. If your laptop battery is swollen, chances are the battery is not replaceable. You should replace your laptop battery before it gets too swollen and explodes.


If you haven’t used your laptop for a couple of weeks, your battery may be ruined. If you turn on your computer with a full battery, but then right away it tells you to recharge, you have a laptop battery that is discharging itself.

Testing your Laptop Battery

A smart thing to do is to test your laptop battery before you begin trying to fix it. To test your dead laptop battery, you must have a universal laptop battery tester, that you can purchase on Amazon or your local hardware store. With this device, you will be able to find out a lot of important information about your laptop battery such as discharge rate, and capacity.

How to Recondition Laptop Battery

Now that we got the most common laptop battery symptoms addressed, I will talk about how to recondition your laptop battery.

Just a heads up, some laptop batteries are not removable such as Macbook’s. In this case, you are not able to recondition your laptop battery.

Step 1: Remove the battery from your laptop and make sure to fully discharge your laptop battery.

Step 2: Dissasemble the laptop battery.

During this step, you have to be very patient in taking the laptop battery apart. Once you have the laptop battery apart, you will need to attach the autobulbs to test battery elements. You must replace all broken laptop battery elements before you proceed to step 3.

Step 3: Final Step To Recondition Laptop Battery

Once you have all of the battery elements repaired, put the battery back together and insert it back into your laptop. Here is the best part, recharging the laptop battery that you have successfully recovered.

recondition battery guide

Laptop Battery Reconditioning Tips And Tricks.

In conclusion, with the above information, you should be able to recondition a laptop battery. Below are few more tips to help keep your laptop battery in great condition.

  • Fully discharge and recharge your laptop battery, especially if you have a Lithium Ion Laptop battery.
  • If you plan on using your laptop on the charger, simply remove your battery and use your laptop with the wall charger to avoid using your battery.
  • Never run the battery 0% every cycle.