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 Yuanqing said: "I believe urbanisation will help us further increase the overall [domestic] PC market." Yang also stressed the opportunity presented by the China's relatively low penetration rate of personal computers. Lenovo previously benefited from the Chinese government's rural subsidies, part of a wider economic stimulus initiative, designed to increase purchases of appliances and electronics. That program, which Lenovo joined in 2004, ended in 2011. Lenovo enjoys consistent price premiums over its traditional competitors in rural markets and a stronger local sales and service presence. Lenovo has gained significant market share in India through bulk orders to large companies and