Hiport 9 Cell Laptop Battery For IBM Lenovo Thinkpad T42 Type 2373, 2374, 2376, 2378, 2379 Laptop Notebook Computers Cells: 9 Cells Volts: 10.8V Capacity: 6600mAh; 71Wh Type: This item is an extended capacity 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.