ThinkPad T series T420s, and the T520, have been lauded for their battery life – up to 30 hours with a 9-cell battery slice. ThinkPad T series The ThinkPad T series is a line of laptop computers introduced by IBM in 2000. After the transfer of the consumer computer division in 2005, they were developed and marketed by Chinese technology company Lenovo. IBM introduced the T series as part of their ThinkPad brand in 2000. The laptop was meant to cater to users working with multiple networks and in different environments. This resulted in the development of the IBM Embedded Security Subsystem. From
ThinkPad X series to be available in the UK on June 7, 2011. The specifications of the ThinkPad X1 laptop are given below: The ThinkPad X-series laptops released in 2012 by Lenovo were the X1 Carbon, X131e, X230 and X230t (tablet). In the T, W, and L series the models Thinkpad T430, T430s, T530, W530, L430 and L530 were also released. In early August 2012, Lenovo released the ThinkPad X1 Carbon announced on .<ref name="release X1 Carbon,X230,X230t,T430,T430s,T530,W530,L430,L530,Series 3/USB 3.0 Dock"></ref> The X1 Carbon weighs 1.35 kg, has a battery life of roughly eight hours, and has a start-up time of less than 20