Lapkit battery for Toshiba satellite A660, A665, C600, C640, C650, L310, L320, L640, L650, M300, M800, U400 series laptops Ratings : Li-Ion, 10.8V, 4400mAh Compatible P/Ns : PA3634U-1BAS, PA3635U-1BAM, PA3635U-1BRM, PA3636U-1BRL, PA3638U-1BAP, PA3728U-1BRS, PABAS117, PABAS118, PABAS178. Supports the following laptop Models: Toshiba satellite A660, A665 series notebooks, Toshiba satellite C600, C640, C650, L310, L320, L640, L650 series notebooks Toshiba satellite M300, M800, U400 series notebooks Please check above battery part number (P/N) from the label of existing battery.