Dell 4K085 Dell Inspiron 2500 Laptop Notebook 8-Cell 14.8V 66WHr Li-ion Rechargable Battery, Compatible With Inspiron 3700, 3800, 4000, 4100, 4150, 6000, 8000, 8100, 8200, Latitude C500, C800, CPtV, C610, C510, C840, C600, C640-C540, CPia, CPiR, CPt, CPxH, CP_CPi, Precision WorkStation M40, M50, M60, Compatible Dell Part Numbers: 8M815, 1J433, 3X213, 4K085, 2J627, 1X511, 75UYF, 1691P, 5081P, 3 Inspiron 2500, 3700, 3800, 4000, 4100, 4150, 8000, 8100, 8200 Latitude C500, C800, CPtV, C610, C510, C840, C600, C640-C540, CPia, CPiR, CPt, CPxH, CP_CPi Precision M40, M50, M60 8 Cell, Type:66WHr, Rating: 143.8V 4460mAh Dell Part Numbers: 8M815, 1J433, 3X213, 4K085, 2J627, 1X511, 75UYF, 1691P, 5081P, 3149C, 53977