"36 minutes of battery life was impressive, but bear in mind that was with the larger 12-cell battery, which sticks out somewhat from the back and the bottom of the system."...
Reviews.cnet.com
"available with long-lasting 12-cell battery."...
ZDNet
170237U, Core Duo 1.66 GHz, 512 MB (DDR2 SDRAM) RAM, 40 GB Serial ATA, 5400 RPM hard drive, 12.1 in. XGA TFT LCD display, Microsoft Windows XP Professional, Intel Centrino Duo Mobile Technology, Released: May 06
Pentium M 1.86 GHz, 1 GB (DDR2 SDRAM) RAM, 40 GB hard drive, 14.1 in. XGA TFT Active Matrix display, Microsoft Windows XP Professional, Intel Centrino Mobile Technology, Released: Apr 05
"The ThinkPad T43 is powered by the Pentium M 725 (1.6GHz) processor that allows the system to have a very strong battery life but still run programs quickly"...
Compreviews.about.com
Core Solo 1.66 GHz, 512 MB (DDR2 SDRAM) RAM, 40 GB Serial ATA, 5400 RPM hard drive, 15.4 in. WXGA TFT Active Matrix display, Microsoft Windows XP Media Center Edition, Released: Apr 06
Core Duo 1.66 GHz, 512 MB (DDR2 SDRAM) RAM, 60 GB Serial ATA, 5400 RPM hard drive, 12.1 in. XGA TFT LCD display, Microsoft Windows XP Professional, Intel Centrino Duo Mobile Technology, Released: Mar 06