These Laptops Batteries are specifically designed and built for the TOSHIBA Toshiba Satellite M30X-S Series With a longer power lasting time and quick time to be fully charged, the battery gives you the best performance possible compared to original manufacturer standards for TOSHIBA Toshiba Satellite M30X-S Series Batteries; even it delivers 5% more power than the original TOSHIBA Toshiba Satellite M30X-S Series Battery.