BuyBatts 9 Cell Battery Fits Dell XPS M1530, PP28L, RU006, RU033, GP975, RN894, RN897, 312-0664, 312-0665 Notebook Laptop Portable Computer Replaces 6 cell RU030, TK330, XT828, XT832, 312-0660, 312-0662, 312-0663, 451-10528 and has more run time. Item Type: This item is an extended capacity 9 cell battery. This battery is physically larger than batteries with fewer cells. Please compare the specs to determine if this battery will be larger than your original. Capacity: 6600mAh; 73Wh Volts: 11.1V Cell Count: 9 Cells