How to Repair Inverter Battery at Home

 Having an inverter at home is essential, especially during power outages. However, the battery of an inverter can develop faults due to various reasons. When this happens, you don't have to worry about buying a new one because you can repair your inverter battery at home. Repairing your inverter battery is cost-effective, and it can save you a lot of money. In this article, we will guide you on how to repair your inverter battery at home.

Inverter Battery Repair

What is an Inverter Battery?

An inverter battery is a rechargeable battery that provides power backup when there is no electricity. It is used in inverters to store the energy generated from a power source such as solar panels, wind turbines, or the grid. The inverter battery is the heart of the inverter system, and it is essential to keep it in good condition to ensure uninterrupted power supply.

Step by Step Guide to Repair Inverter Battery at Home

Follow these steps to repair your inverter battery:

  • Step 1: Safety first! Make sure you wear protective gear such as gloves and goggles before you start repairing the battery.
  • Step 2: Remove the battery cover and check for any physical damage, leakage, or corrosion. If you notice any of these, clean the affected areas with a damp cloth or sandpaper.
  • Step 3: Check the water level in the battery. If the water level is below the recommended level, add distilled water to the battery cells. Do not use tap water as it contains impurities that can damage the battery.
  • Step 4: Check the voltage of the battery using a multimeter. If the voltage is below 10.5 volts, charge the battery using a suitable charger. Make sure you use the correct charging voltage and current as per the manufacturer's instructions. Charging the battery with the wrong voltage or current can damage the battery.
  • Step 5: After charging the battery, check the voltage again. If the voltage is still low, you may need to replace one or more of the battery cells.
  • Step 6: If you need to replace a battery cell, remove the old cell and replace it with a new one of the same type and rating. Make sure you connect the new cell in the correct polarity.
  • Step 7: After replacing the battery cell, charge the battery again and check the voltage. If the voltage is within the recommended range, your battery is repaired and ready to use.

Advantages and Disadvantages of Repairing Inverter Battery at Home

Like everything else, repairing your inverter battery at home has its advantages and disadvantages. Here are some of them:


  • It is cost-effective and can save you money.
  • You can do it yourself without the need for a professional.
  • You learn a new skill.


  • You may damage the battery further if you do not follow the instructions carefully.
  • You may not have the right tools or equipment to repair the battery.
  • You may not be able to repair the battery if it is severely damaged.


Repairing your inverter battery at home is not as difficult as it may seem. With the right tools and instructions, you can repair your battery and save money. However, it is important to follow the instructions carefully and take all necessary safety precautions to avoid damaging the battery or injuring yourself. If you are not confident in repairing the battery yourself, it is best to seek the help of a professional.


Q: Can I repair my inverter battery if it is completely dead?

A: If your inverter battery is completely dead, it may not be possible to repair it. However, you can try charging the battery using a suitable charger and see if it comes back to life.

Q: How often should I check the water level in my inverter battery?

A: You should check the water level in your inverter battery every three months or as recommended by the manufacturer.

Q: Can I use tap water to fill my inverter battery?

A: No, you should use distilled water to fill your inverter battery. Tap water contains impurities that can damage the battery.

Q: How long does it take to repair an inverter battery?

A: The time it takes to repair an inverter battery depends on the extent of the damage and your experience in repairing batteries. It can take anywhere from a few hours to a few days.