Amstron provides reliable, high performance replacement batteries for your Toshiba laptops. The LTO-63 is designed to be 100% manufacturer compatible with Toshiba OEM part numbers PA3291U-1BAS and PA3291U-1BRS. Amstron Lithium-Ion batteries provide superior performance and reliability. The PA3291U-1BAS replacement Toshiba battery is rigorously tested for productivity and compatibility with the Toshiba Satellite P20 and Satellite P25 series of Toshiba notebook models. The LTO-63 is designed to meet or exceed the original battery of your Toshiba laptop. • Chemistry: Li-Ion • Rating: 14.8V 6600mAh • Will meet or exceed original specifications • Warranty: 1 Year