Battery Specs & Technical Details: Battery Chemistry: Lithium Ion (Li-Ion) Capacity: 4400mAh Voltage: 11.1V Color: Black Dimension: 206.90 x 40.80 x 20.50 mm Net Weight: 450.76 g Work With The Following Laptop Models: TOSHIBA Dynabook Qosmio F20 Series , TOSHIBA Dynabook Satellite M Series , TOSHIBA Dynabook Satellite T10 Series , TOSHIBA Dynabook Satellite T11 Series , TOSHIBA Dynabook SS MX , TOSHIBA Dynabook TX Series , TOSHIBA Dynabook TX/2 series , TOSHIBA Dynabook TX3 series , TOSHIBA Dynabook TX4 series , TOSHIBA PORTEGE M300 , TOSHIBA PORTEGE S100 , TOSHIBA Qosmio F20 Series , TOSHIBA QOSMIO F25 SERIES , TOSHIBA SATELLITE A50 , TOSHIBA SATELLITE A50 SERIES , TOSHIBA SATELLITE A55 , TOSHIBA SATELLITE M3 SERIES , TOSHIBA TECRA A2 , TOSHIBA TECRA M2 , TOSHIBA TECRA M2V , TOSHIBA Tecra M3