Hipower 9 Cell Laptop Battery For Dell Latitude E5420, E5420M, 5420, P16G, E5520, E5520M, 5520, P15F, E6420, E6420 Atg, P15G, E6520, P14F, 312-1165, M5Y0X, PRV1Y, 0M5Y0X, 0PRV1Y Laptop Notebook Computers (Blue Label) Cells: 9 Cells Volts: 11.1V Capacity: 7840mAh; 87Wh Dell has two versions of this battery; one with blue label and one with green label. This battery will only replace batteries with a blue label.