Wiki: ThinkPad ThinkPad is the brand name for a range of portable laptop and notebook computers originally designed and sold by IBM. Since early 2005 the ThinkPad range has been manufactured and marketed by Lenovo, which purchased the IBM PC division. IBM ThinkPads have a reputation for generally being solidly built, dependable, and innovative.



ThinkPad R: Business notebook for standard business requirements, two internal bays, one of which is swappable. Models with an appended 'e' (economy) further cut-down versions. The R30/R31/R40e models were manufactured under license by Lenovo. ThinkPad S: Subnotebook, extremely small and light, produced for Japanese market only. ThinkPad T: Thin and light notebook aimed at the corporate market. Two internal drives, one of which is swappable. ThinkPad X: Subnotebook, very small and light, hard drive internal, no internal optical drive, 12" screen. A tablet version (X41 and X60 Tablets) [2] was introduced in June of 2005, and again in December of 2006. The latest update, the X61 Tablet, was released May 31, 2007.



Model-specific information

ThinkPad T20 series (T20, T21, T22, T23) (IBM THINKPAD T20 Battery Li-ion, 10.80 (Compatible with 11.10V), 4000mAh)

Mobile Pentium III or Mobile Pentium III-M, sub-5 lb (2.3 kg) class machines. Contained processors ranging from 0.18 micrometre Mobile Pentium III 650 MHz to 0.13 micrometre Mobile Pentium III-M 1.20 GHz. Typically had 14.1 inch XGA screens, Ultrabay 2000 optical drives, S3 Savage/IX-MV graphics chip and Cirrus Logic CS 4614/22/24 sound chips; although variations along the line existed. Introduced the ThinkLight, a LED mounted inside the upper screen lip that illuminates the keyboard (activated with Fn-PgUp, the extreme diagonal keys); and titanium-reinforced and rubberized screen lids. Used MiniPCI form factor cards, which could be modem and/or ethernet. With the T23, an internal WiFi antenna became available, so WiFi miniPCI cards could be used. These models did not contain the active hard drive protection or touchpad pointing device which appeared in later models. They were clad in black non-slip rubber with embedded glitter. The case lid had tabs along the edge that interlocked with depressions in the lower case when closed, to reduce case flexing. Comparatively more stylish, functional, and rugged machines; and easy to disassemble for repair or upgrades.
http://www.bloglines.com/blog/batteryinfo</img> </img> </img> </img>



More...