Most solar installations produce all the energy you need during daylight hours and generate even more than you consume, which is known as surplus to save on your electricity bill.

The perfect complement to your photovoltaic system is the battery which stores the energy produced by the solar panels and not consumed at the moment, so you can use it while there is no sunlight. This way, you can take advantage of the surplus of your solar installation and increase the savings in your bill.

We can totally help you find the proper solar panel batteries for your system, to take all the advantages possible. Just let us know.

What are batteries for solar panels?

In a photovoltaic system, solar batteries are not essential, but they are regarded as an important element. The energy they store can be self-consumed instead of poured into the grid, making your total consumption much lower because you generate your own energy.

Like any energy accumulator, these devices have a function within the photovoltaic system; they store the solar energy produced to use it whenever needed.

The photovoltaic modules and the batteries for solar panels are connected through the solar inverter, which is the brain of the installation, or through a charge regulator.

Objectives of using batteries for solar panels

  • To meet high consumption and short duration supplies or lack of voltage.

A battery can provide a higher current intensity than the photovoltaic panel can generate instantaneously (instantaneous power).

  • Back-up power supply in winter months with little sunshine.
  • Storing energy during off-peak hours and releasing it during peak hours of high energy demand.
  • Guarantee, together with the regulator, the stability of operation of the photovoltaic installation.

How does a solar panel battery works

An electrochemical cell, called voltaic cell or glass, is a box inside which there is a chemical substance in the form of a liquid called electrolyte.

Immersed in the liquid are 2 metal plates called electrodes: one will be the positive electrode and the other the negative electrode.

Usually, these electrodes are made of different metals. This vessel or cell is the smallest battery built.

Photovoltaic cell electrodes are made of lead, so they are referred to as acid lead due to the sulfuric acid solution in the electrolyte.

Types of solar batteries

Solar accumulators are classified into several types, depending on the technology used by the manufacturers.

To choose the proper solar batteries, you must know all the differences, since not all photovoltaic installations require the same type of energy accumulators.

The technology used to manufacture the batteries places them in these main categories:

  • Open lead-acid batteries

These are of inferior technology, with a life of 300 charge cycles, which means that if charged and discharged once a day, the battery will last less than a year. 

They are used for small consumptions and can be discharged up to 60%, while batteries manufactured with more advanced technology reach full discharge. These types of batteries require maintenance.

  • AGM batteries

Like the previous ones, these batteries have a short life cycle: 500 charge and discharge cycles. They discharge up to 60%. The advantage over the open acid ones is that they do not require maintenance.

  • Gel batteries

These batteries can also be used in homes, but only if they have a very low consumption. These have a longer useful life, withstanding 1,200 cycles. In addition, they discharge up to 60%.

  • Stationary batteries

They have superior technology and offer 3,000 charge/discharge cycles. In addition, they can be discharged up to 80%. These are useful for large or off-grid homes.

  • Lithium batteries

Lithium batteries offer up to 6,000 charge and discharge cycles, so they can be discharged almost 100%. They are designed for homes with large or isolated consumption and have lightweight.

Benefits of using solar batteries

  • Increased profitability of the solar photovoltaic installation. This will reduce the payback period of the investment.
  • Greater independence from the electricity grid and you will not be negatively impacted by the rising electricity prices.
  • You will reduce CO2 emissions, which contributes to healing the environment.
  • You will maximize savings in your electricity bill up to 80%.

Do not hesitate to call us if you wish to purchase batteries for your photovoltaic installation or if you have any questions. The future of energy is in your hands.