The technology behind solar batteries has developed over the last couple of years. The strong energy density, low maintenance, long life span, and low maintenance of lithium-ion batteries make them the best option available. Lithium-ion phosphate (LiFePO4) should be noted for its newer chemistries, which provide additional safety. Better advanced battery management systems (BMS) help in monitoring and controlling the charging and discharging cycles, aiding in better “cut-off” limits. Other areas of research include the total efficiency, costs, and recyclability of solar batteries