Go to Amazon Sites : http://www.amazon.com/gp/product/B002VIUATK?tag=shitmycatsrea-20

7200 mAh 9 cell Replacment DELL Latitude D820 D830 D531 series Battery 3120394 3120538 XD735

Capacity 7200mAhCell 9Dimension 207582222mmType Li-ionColour grey
Replacement ForDELL312-0393312-0394312-0402451-10308451-10309451-10326451-10327DF192YD623YD626312-0537 310-9122 GX047 CF623 YD623 CF704 CF711 312-0394 FF232 312-0402 D739
Fit Machine ModelsLatitude D820 Latitude D830Latitude D531Precision M65Precision 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