TI - Metaheuristic-based machine learning models for accurate battery remaining useful life prediction in renewable energy storage system AU - GANDHI, S. AU - CHOPANE, A. AU - PARKHI, A. AU - DESHMUKH, S. AU - KULKARNI, S. SO - Sigma Journal of Engineering and Natural Sciences 2026;44:528-544. DO - 10.14744/sigma.2026.1996