ThinkPad design with 3M technology allows for an average of 20-30% reduction in backlight energy and an expected 20% increase in battery life over previous models. Lenovo ThinkPad T Series devices represent its largest segment of commercial notebook PCs, accounting for an installed operating base of more than 100 million units. Lenovo ThinkPad T Series devices represent its largest segment of commercial notebook PCs, accounting for an installed operating base of more than 100 million units. Lenovo ThinkPad T Series devices represent its largest segment of commercial notebook PCs, accounting for an installed operating base of more than 100 million units. Lenovo ThinkPad T Series devices represent its largest segment of commercial notebook PCs, accounting for an installed operating base of more than 100 million units.