 (Genuine OEM Dell 85WH CF623 MM165 Type DF192 9-Cell 11.1V Rechargeable Li-Ion Notebook Laptop Battery For Latitude: D531, D531N, D820, D830, Precision M65, M4300, Workstation M4300 Systems Compatible Part Numbers: MM156, CF623, CF704, CF711, DF192, DF249, DF230, DF249, FF232, GX047, MM165, XD736, XD739, YD623, YD624, YD626, 310-9122, 310-9123, 312-0393, 312-0394, 312-0401, 312-0402, 312-0538, 451-10308, 451-10309, 451-10326, 451-10327, 451-10309, 451-10410, 451-10411)