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
Lenovo include the Lenovo notebooks, which were introduced in 2008. Lenovo picked Nigeria in 2013 to release its smartphone because unlike South Africa and other African countries, there is no requirement to partner with a local telecom firm to sell its phones. In the long term, according to Braum, "Lenovo in Africa will focus on continuing to consistently supply personal computer products and allow this market to grow, while moving into new territory such as mobile and enterprise." In the United States, Lenovo began the "For Those Who Do" marketing campaign in 2010, created by the ad agency Saatchi & Saatchi.