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 Helix 13.3-inch Ultrabooks, such as the Acer Aspire S7. Of course, the Helix is a hybrid device that can be used in more ways than one--you aren't saddled with the keyboard like a laptop." Chang concluded, "With a starting price of US$1,499, the ThinkPad Helix is pretty expensive, even for Ultrabook convertibles. However, its business slant means that companies, which can afford the premium price for the extra security and enterprise features, are most likely the ones to purchase the Helix." In another review published by "CNET" editors wrote, "There's a lot to like about the Lenovo ThinkPad Helix. The engineers