4 Ways to Ensure Optimal Health of Your Solar Battery.

4 Ways to Ensure Optimal Health of Your Solar Battery.
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4 Ways to Ensure Optimal Health of Your Solar Battery.

           4 Ways to Ensure Optimal Health of Your Solar Battery.

Your solar battery is undoubtedly one of the most important components of your solar panel systems. This is why it is important to maintain it and take proper care to ensure its optimal health and efficiency.

Did you know that maximum solar battery failures are caused by a process called sulfation? This process occurs when sulfur crystals are formed on the lead plates of the solar battery to prevent chemical reactions from occurring. This process results from insufficient care and maintenance.

Other than sulfation, there other problems that you can face with your solar battery in case it is not maintained properly. So, let’s take a look at a few things that you can do to ensure that your battery is properly maintained and works to the best of its capabilities.


Image Source: Luminous


In the case of unsealed solar batteries, it is advisable to open the cap and look inside to check fluid levels. Distilled water should be poured inside the cells till no metal lead surface is visible. Most batteries will feature a ‘fill line’ to indicate the electrolyte level. But in any case, the maximum fluid should approximately be 1/2” below the lid. You should never overfill your batteries as they can spill and get damaged.


As a solar homeowner, you should have a clear idea about the solar battery charging cycle. This cycle occurs in three charging phases – float, bulk, and absorption. Let’s try to understand these phases briefly.

FLOAT – Float charging (also known as trickle charging) refers to the charging of the solar battery at the same rate as it is discharging at. This keeps your solar battery fully charged at all times.

BULK – Bulk charging takes place when you start charging a discharged solar battery. In this case, the voltage rises towards the maximum permissible level.

ABSORPTION – The bulk phase is followed by the absorption phase. At this time the voltage is held constantly at the maximum levels and the current starts to drop till the battery is completely charged.

If you have an adjustable-charge controller or solar inverter installed, you need to set your float, bulk, and absorption charging voltage according to the recommendation of your manufacturer.


It is important to clean your solar battery terminal regularly. You can easily do this with a solution of baking soda and distilled water. A battery terminal cleaner brush also comes in handy to clean a solar battery. Rinse the terminals with clean water and ensure that all the connections are tight. You can also coat the metal components with commercial sealant or high-temperature grease. Always remember to remove the clamps – first negative than positive – before cleaning.


While replacing old batteries you must always keep in mind that the performance of your solar batteries would be reduced if you combine them with new ones. When old and new solar batteries are combined, the new batteries degrade quickly to match the quality of the old ones. This is why you should always avoid combining new and old batteries.

To make sure you’re getting optimal usage out of your solar batteries, always buy from trusted, reliable brands like Luminous. Luminous is known for offering high-quality, reliable solar batteries that work effectively and consistently. So, if you’re on the lookout for a new solar battery, check out the Luminous website today.

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