A New Generation of Energy Storage Systems with State-of-Charge (SOC) Active Balancing for Extended Service Life of up to 30 Years. Key technologies are developed to quickly identify battery health and optimize usage. The key technologies include developing control and operation algorithms to enable (i) proactive maintenance, (ii) predictive thermal management, (iii) active cell balancing, and (iv) dynamic demand response management. Together, these technological advancements extend the life of BESS and batteries and lower energy costs for consumers.