Hiport Laptop Battery For Dell 312-0712/AB Laptop Notebook Computers Cells: 9 Cells Volts: 11.1V Battery Capacity: 6600mAh; 73Wh Product 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. Item Dimensions: 11.86in X 1.94in X 1.48in (301mm X 49mm X 38mm)