Things Required For Restoring A Deep Cycle Battery

Strong Lead-acid batteries, popularly known as Deep cycle batteries, are mostly used for the vehicles which need to gain more power in less time. Their durability, efficiency and discharge/charge power are what made these batteries special out of all. Although they deserve every penny we keep on them, other than buying a new one in need, what’s there in restoring the deep cycle battery be ourselves?

Yes! We have an alternative for you to bring back the life of your dead battery. Save life, save the bucks, by just having knowledge upn the voltage of your battery. Wondering how? Here we are, presenting this article to educate you towards reviving the life of a dead deep battery by telling you the things needed and the process to go through.

Things Required For Restoring A Deep Cycle Battery

Things Required:

For Precautionary purpose (Should wear throughout the process):

  1. Gloves (To cover the hands while dealing with the acid materials)
  2. Rug (For emergency purposes)
  3. Glasses (To keep the chemicals away from reaching your eye)
  4. Rough and rigid clothes (You should wear them while dealing with the restoring).

For the process:

  1. A dead battery to restore.
  2. Distilled Water.
  3. Baking Soda. (A base to deal with acid)
  4. Metallic brush. (To deal with the clamps of cells)
  5. A dry cloth.
  6. Petroleum jelly. (To apply on clean terminals)
  7. A Screwdriver.
  8. A Suitable wrench.
  9. A Rejuvenator.
  10. A Voltmeter.
  11. A Charger.

Come, let us guide you through the process of reviving the battery too.


Note that, Only deep cycle wet/flooded batteries can be watered. YOU SHOULD NOT WATER THE AGM/GEL deep cycle batteries.


1.Watch out your safety:

Before going through the process, wear gloves, protection glasses and rough clothes THROUGHOUT THE PROCESS as you are dealing with an acid material which can burn your skin and damage your organs.

2.Cleaning the battery:

Keeping the batteries idle for a long time leads them towards corrosion. If you see a white powder somewhere around the battery, know that it is corroded.It is a toxic material which should be washed off. For that prepare a baking powder solution (a gallon of water mixed with a pound of baking powder). It helps in rubbing the corroded material of acid harmlessly.

Then, take off the terminals off the battery using the suitable wrenches and clean the clamps with the baking powder mixtures and a brush smoothly.

Cleaning the battery

On completing that, clean the battery with a dry cloth and check for any cracks damages. If everything is okay,apply petroleum jelly on the terminals and there, we can move on to the next step.

3.Detaching the cell lid and filling the battery cells with distilled water:

Here is what the restoration of the battery’s life starts. Using the screwdriver, remove the cell lids from the battery. Make sure that while doing this, no other material, be it dirt or debris go into the battery cells.

You should use distilled water to fill the cells. Before going to the filling process, why distilled water? Because the undistilled water contains hydrogen and oxygen and if it remains in the battery later, it may cause the sparks or explosions.

In the filling process, fill the water in each cell based on the size of the battery and the level of acid the cell contains. Make sure that the water doesn’t overflow.

If your battery starts to work immediately, don’t be surprised. It is bound to happen. Then, charge it with a regular battery charger.

4.Connect the battery to a resuscitator:

On Connecting to the regular battery charger, if it starts to charge, leave it for a while. Else, purchase a battery rejuvenator. A battery rejuvenator helps in powering the plates of a battery, thus causing the sulphates accumulated in between, breaks. Once the accumulated sulphates get removed, you can charge the battery once again. This time, successfully! If not, repeat the same process (Step 4).

5.Test the voltage of your battery

Once you are done with the charging thing, check the charge your battery is holid up with a voltmeter. If it is good, leave it idle for a few days and recheck again. If the result is the same, It is almost working as a brand new and you can directly install it into your vehicle.

Test the voltage of your battery

Awesome, right? Why to waste the money when you have a good no.of alternative options to change the old one as a brand new one? Come, let us explore a method to recondition a car battery this time.

How to choose a suitable charger?

You generally use the charger when your Deep cycle battery gets completely discharged. The selection of your deep cycle battery charger will depend upon the battery’s design. As there are a number of types of charges available in the market today, with their own unique characteristics, you should wisely choose it based on the type of the battery. Note that, not all the chargers are compatible with your battery. There are four common types of deep cycle battery chargers available today.

  1. Absorbed glass mat,
  2. Valve regulated lead-acid type,
  3. Wet cell,
  4. Gel cell.

So, these are the necessary things needed for restoring a deep cycle battery. All of them are available in the market at affordable prices.

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