7200 mAh 9 cell Replacment DELL Latitude D820 D830 D531 series Battery 3120394 3120538 XD735 XD736 YD624 DF230 DF249 FF231 0MM160 312-0538 MM165 312-0538 310-9123 come with a USB 2.0 TF card reader (Replacement) Capacity: 7200mAh,Cell: 9,Dimension: 207.5*82*22.2(mm),Type: Li-ion,Colour: grey Replacement For:DELL.:312-0393,312-0394,312-0402,451-10308,451-10309,451-10326,451-10327,DF192,YD623,YD626,312-0537, 310-9122, GX047 ,CF623, YD623, CF704, CF711, 312-0394, , FF232, 312-0402, D739, Fit Machine Models:Latitude D820 Latitude D830,Latitude D531,Precision M65,Precision M65 Mobile Workstation, Precision M4300 Please make sure that the battery part numbers listed in the description matches the battery part number on your original battery before you purchase The Replacement Battery is in high grade quality and certified by CE and RoHS