Lead-acid batteries, a technology with a long-standing history, have traditionally been utilized in automotive and backup power applications. However, recent advancements in lead-acid battery technology are reshaping their role in grid-scale energy storage. Despite facing competition from newer battery technologies like lithium-ion, lead-acid batteries offer distinct advantages that make them well-suited for grid-scale applications. These advantages include their proven reliability, cost-effectiveness, and recyclability, factors that are particularly crucial for large-scale energy storage deployments.