This is a Brand New Li-Ion Original Battery for Toshiba. Toshiba Part Numbers: PA3286U-1BRS, V000011400, PA3286U. Compatible Toshiba Models: Toshiba Satellite : M20. Toshiba Tecra : TE2300. Product Specifications: Rating: 10.8V Capacity: 4300mAh Size: 4.75" x 2.75" x 0.75" Color: Black Cells: 6 Cells Weight: 11oz/ 0.7lb Battery Life:: Up to 3 hours and 42 minutes (normal mode) Technology: Lithium-Ion Condition: Brand New In Stock: Yes