"Last week when traveling to Europe for FOSDEM and other
business meetings, I had picked up a new 9-cell battery for a
Lenovo ThinkPad T60. While an additional three battery cells will
noticeably extend your battery life, you can also extend your
battery life by taking a few simple steps to optimize your Linux
desktop that will also reduce your power consumption and heat
output. In this article are a few simple steps to take in order to
extend your notebook's battery life on Ubuntu..."