The types of solar batteries most used in photovoltaic installations are lead-acid batteries due to the price ratio for available energy. Its efficiency is 85-95%, while Ni-Cad is 65%. Undoubtedly the best batteries would be lithium-ion batteries, the ones used in mobiles.
Solar battery technology stores the electrical energy generated when solar panels receive excess solar energy in the hours of the most remarkable solar radiation. Not all photovoltaic installations have batteries. Sometimes, it is preferable to supply all the electrical energy generated by the solar panels to the electrical network.
Solar batteries work using DC electricity. Since the PV panels generate a direct current, there is no problem when charging. However, most domestic devices at home work using AC. Usually, the system has an inverter that converts DC into AC. What is the lifespan of a solar battery?
The batteries have the function of supplying electrical energy to the system at the moment when the photovoltaic panels do not generate the necessary electricity. When the solar panels can generate more electricity than the electrical system demands, all the energy demanded is supplied by the panels, and the excess is used to charge the batteries.
The ability to undergo a constant charging and discharging process is known as the cycling resistance of a battery. Solar batteries work using DC electricity. Since the PV panels generate a direct current, there is no problem when charging. However, most domestic devices at home work using AC.
Lead acid batteries are the oldest rechargeable batteries. These batteries can deliver high currents; therefore, their cells have a high power density. This characteristic and their low price make them suitable for many applications, particularly solar energy, solar kits, and motor vehicles.