Officialy 9-cell battery for the Lenovo T61 14.1″ wide display is not available, but you can find compatible replacements made in China. They have a very good price, you can find them on eBay at around 50$. I’ve buyed one and it reports as having SANYO cells inside. In the pictures you can see how it looks installed on my laptop and how much time it takes to charge (approx. 5 hours). From what I’ve read on the forums it should power the laptop for 5 hours if you have onboard Intel Graphics and just 3.5 hours if you have the nVidia Quadro. The genuite 4-cell battery does not stick out of the laptop, the 5-cell and 7-cell are sticking out and this replacement 9-cell sticks out and up too.