Digital Trends – Lenovo has refreshed its line of ThinkPad notebooks with six new models aimed at business and other professionals looking for a strong blend of performance and battery lifeâand one of them can run up to 30 hours on a standard 9 cell battery and an option 9-cell slice battery. The lineup also features models with switchable Nvidia Optimus graphics (for both graphics power and battery-sipping capabilities), along with technologies designed to enhance voice and video calling capabilities.