Solar batteries are one of the fundamental parts of your solar installation. The useful life of the solar batteries as any other battery is not infinite, and throughout its useful life is losing performance and accumulation power, however it is possible that sometimes we have a problem unrelated to that limited life, and that the battery problem is for another issue.
The first thing is to check the condition of the battery and each and every one of the elements. Perhaps the most important thing is to detect well what the problem is, to be able to provide the best solution, and for me the best solution is based on PROFITABILITY because watch out with the prices of solar batteries.
We show you tricks to know the state of the batteries:
How to check the Solar Battery Status?
Test for battery problem battery
If we have detected the problem, we can apply one of the following options
In case of having any of the glasses in bad condition, we have to replace that element, but it is necessary to bear in mind that the ideal is to place a glass of the same model if you wish you can look for it in this catalog of solar batteries.
And what do you need to know before changing an element of your solar battery?
If we have to change one or more elements of a solar battery, it is best to charge the battery. Both the ones already installed in our installation and the new ones must have the same charge level. And why? If we have a discharged battery and we install a new element that is normally at 90% charge, several things can happen:
- The new element will heat up when a forced load is applied, which means that it will have a shorter service life as the temperature rises.
- The other elements of the battery may not be charged to 100% because the new element will raise the voltage of the total battery.
- The battery set will not work properly if all its elements are not equalized because the elements with less charge will drop in voltage faster and will cause the inverter to fail due to low battery.
To avoid this, before changing an element, we have to charge the rest of the battery, and how do we do it? well, disconnecting the consumption of the installation for one or several days. or, in case of having a Inverter / Charger o battery charger we must connect the group and give a charge to the batteries.
BUT BE CAREFUL!
Before making a repair it is important to assess the profitability of the repair, ie. If it turns out that we have a solar battery which is 15 years old and that daily we discharge at 40%, it is very probable that we change a glass after another one, which supposes a high cost of repair and in addition at the end we will have to change the complete battery.
Another very common problem in batteries is a bad connection. Throughout the time in the terminals of the battery sulfate can be created which little by little deteriorates the connection between the batteries. When we notice this sulfation we must take measures quickly. The advisable thing is to unscrew all the connections and screws and to clean with a wire brush all the dirt. It changes the battery bridges of cable that are in bad state and it carries out the assembly of 
new. There are maintenance kits for batteries that will never be of more, in last place it applies a protector of poles, if you do not have any it is enough with smearing a little vaseline.
