Lenmar LBTSM55LX Battery for Toshiba Satellite M40/45/50/55, Tecra A3/4/5, S2, Extended Fits: Toshiba Satellite A105-S4004, A105-S4034, A105-S4054, A105-S4064, A105-S4074, A105-S4084, A105-S4254, A105-S4284, A105-S4334, A105-S4384, M105-S3041, M115-S3094, M115-S3154, M45-S265, M45-S2653 Replaces: Toshiba PA3399U-1BAS, PA3399U-1BRS, PA3399U-2BAS, PA3399U-2BRS, PA3400U-1BAS, PA3400U-1BRL, PA3400U-1BRS, PA3465U-1BRS, PA3478U-1BAS, PA3478U-1BRS 10.8V / 8800mAh Lithium Ion 1 Year Warranty Fits Toshiba Satellite M40, M45, M50, M55, Tecra A3, A4, A5, S2 Replaces PA3399U-1BRS, PA3399U-1BAS 10.8V 8800mAh Lithium-Ion 1 Year Warranty