PV batteries work together with solar panels to capture the energy produced from sun exposure due to the photovoltaics (PV) in the system. They store the excess energy provided during sunny periods for nighttime utilization. PV batteries increase the independence of the PV systems by minimizing the need to supply redundant energy to the grid while maximizing the harvesting energy capacity solar panels utilize. Lithium-ion batteries and LiFepo4 may not be the only types, but they are the most available and best performing, showcasing efficiency and reliability.