This Dell Equivalent M140/630m/640m Inspiron Battery Is rated at 53Wh 11.1V and 4800mAh 8 cell to meet or exceed the original OEM Dell battery. This battery will replace the Dell M140/630m/640m Inspiron Battery and works with the following Laptops/Notebooks:Dell Inspiron 630m, Inspiron 640m, Inspiron E1405, Inspiron E1405 Notebooks, Inspiron M140, Inspiron PP19L, Inspiron XPS M140, Inspiron XPS M140 Notebooks, and the following battery Models:312-0373, 312-0450, 312-0451, 312-0451 , 451-10284, 451-10285, 451-10351, C9551, C9553, C9554, C9555, CC154, CC156, CC158, DC224, DC226, DH074, E1405, FC140, F11, MJ365, MJ440, PP19L, RC107, TC023, UG679, WG389, WG400, Y4493, Y9943, Y9947, Y9948, YG310, YG326.
