11.10V,6600mAh,Li-ion,Replacement Laptop Battery for Dell Latitude D531, Latitude D531N, Latitude D820, Latitude D830, Precision M65, Precision M4300 Mobile Workstation, Compatible part number: 312-0393, 312-0394, 312-0401, 312-0402, 312-0538, 451-10308, 451-10309, 451-10326, 451-10327, CF623, CF704, CF711, DF192, DF230, DF249, FF231, FF232, MM165, XD735, XD736, XD739, YD623, YD624, YD626, 310-9122,GX047 More at http://ping.fm/LS5Sy