In terms of safety, lead-acid batteries are generally considered safer than lithium-ion, as they do not pose the same risk of thermal runaway. . Battery energy storage systems (BESS) are essential for renewable energy integration, grid stability, and backup power. The choice of battery chemistry impacts performance, cost, safety, and lifespan, making it crucial to select the right type for each application. From lithium-ion and lead-acid to. . Lithium-ion batteries are among the most popular choices for home energy storage systems. They are widely used due to their high energy density, efficiency, and relatively long lifespan. Safety matters as much as savings.