Intelligent Battery Pack This is a 6 cell Li-Ion rechargeable battery for Toshiba Satellite M30-309, M30-3091, M30-350, M30-3501, M30-SP309, M35-S320, M35-S3201, M35-S359, M35-S3591, M35-S3592, M35-S456, M35-S4561 notebook computers. This battery ships fully charged, tested and ready to work. This ENERGY+ item is built with the highest quality standards, safety features and has a 12 month warranty.