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 X1 Carbon ThinkPad X1 Carbon The ThinkPad X1 Carbon is a high-end 14-inch notebook computer released by Lenovo in 2012 and updated every year since 2014. The ThinkPad X1 Carbon Touch featured a multitouch enabled screen in order to take more effective advantage of Microsoft's touch-optimized Windows 8, Windows 8.1, and Windows 10 operating systems. In early August 2012, Lenovo released the ThinkPad X1 Carbon as the successor to the earlier ThinkPad X1. The X1 Carbon was first released in China due to the popularity of ThinkPads in that market. In November 2012, Lenovo announced a touch-screen variant called the ThinkPad X1