Tips Sahabat

6 Ways to Repair a Wet Battery that Cannot Hold Charge

09 April 2025
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How to fix a wet battery that cannot hold a charge is something that needs to be done. When a wet battery starts to fail in holding a charge, there is definitely a problem inside it.

This is because, if a wet battery has reached that condition, the car's engine will not be able to receive electricity from the wet battery. If you are not familiar with this method, don't worry. We will explain it through this article. The method can be found below!

Easy Ways to Fix a Wet Battery That Cannot Hold a Charge

There are several causes of a battery not being able to hold a charge. One of them is due to the use of a battery that has exceeded its lifespan.

Well, we have several solutions that can help you deal with this issue. Here is a complete guide on how to fix a wet battery that cannot hold a charge:

1. Prepare the Tools

First, prepare the tools to make it easier to fix a wet battery that cannot hold a charge. The tools needed are as follows:

  • Gloves
  • Battery charger
  • Pipette or syringe
  • Knife
  • USP Magnesium Sulfate
  • Battery water.

2. Remove the Wet Battery

Once all the tools are available, immediately remove the wet battery from the car. Place the battery in a safe and flat location. This is done to prevent damage to the wet battery.

Read Also: Which is Better: Dry or Wet Battery? Here’s the Explanation

3. Place the Battery in a Safe and Flat Location

Open the cover of the wet battery after placing it in a safe and flat location. If you find a seal inside, you can cut the seal with a knife, starting from the edge.

After cutting, you will find several cells from the wet battery. Open the cover of each cell so that you can proceed to the next step, which is to drain the old battery water.

4. Drain the Old Battery Water

To ensure this step is carried out properly, you must insert a pipette or syringe into each cell of the wet battery. Remove the old battery water from each cell until only 30 or 40 percent remains.

Do not drain all the battery water, so you won't have difficulty when refilling the battery. The old battery water that has been drained should be placed in a glass container.

This is done to prevent the battery water from harming the surrounding environment. Battery water contains several corrosive substances.

Dissolve the USP Magnesium Sulfate that has been prepared. Dissolve the substance in boiling water, then mix it with the new battery water. Stir until evenly mixed.

Once done, pour the USP Magnesium Sulfate mixture into each cell of the wet battery. You can use a pipette or a syringe to do this.

5. Charge the Wet Battery

Once fully charged, charge the wet battery with a battery charger. As a suggestion, do not close the cells and the wet battery during the charging process.

This is to allow the wet battery to release air during charging. If the wet battery was previously severely damaged, charge it overnight.

If you do not have a battery charger, you can charge the battery using the alternator. To do this, you must close the wet battery cells and the battery itself, then reinstall it in the car.

You can replace the cover on the cells with a new one. Once the wet battery has been reinstalled in the car, immediately start your car so that the wet battery can be charged by the car's alternator.

Read Also: How to Fix a Completely Dead Wet Battery and Its Advantages

6. Wear Gloves

The final step in fixing a wet battery that cannot hold a charge is to always wear gloves. This is to keep your hands hygienic and to avoid splashes of battery water from the wet battery.

For added safety, you can perform all the above steps with the help of someone else, especially those who understand wet battery repairs. Who knows, they might also provide additional methods for fixing a wet battery that cannot hold a charge.

Alternatively, you can go directly to a professional technician at an official Daihatsu workshop before the wet battery gets worse. Hopefully, this will be useful. Don’t forget to visit our other articles about automotive.

Author: Anggie Warsito

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