Detailed Product Description Compatible Notebook Models: This battery fits Dell Latitude C500, C510, C540, C600, C610, C640, C800, C810, C840, CP, ... , 4100, 4150, 6000, 8000, 8100, 8200 and Precision M50, M40. Dell Part Numbers: 312-0028, 312-0051 , 312-0052, 1K500 , 312 ...