... laptop battery for Dell Latitude D531 D820 D830 9 cells 7800mAh 11.1V Compatible Part Numbers 310-9122,310-9123,312-0393,312-0394,312-0401,312-0402,312-0537,312 ... , 9 cellsVoltage: 11.1VCapacity: 7800MAHFit Laptop ModelsDELL LatitudeD531, D531N, D820, D830 NotebooksDELL PrecisionM65, M4300 Notebooks laptop battery for Dell Latitude D531 D820 D830 9 cells 7800mAh ...