If you use a Linux laptop and have not heard of PowerTop you really need to keep reading! This is a fantastic tool for extending your battery life written and published by Intel. I use it constantly on long flights and my battery lasts long enough for a cross-country flight.
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.
CPU Scaling is a feature built into most modern (mobile) CPUs that allows them to scale up or down in how fast they run and how much energy they suck down based on demand. If you have a fairly modern mobile computer there’s a very good chance that your CPU(s) can handle frequency scaling.
Getting longer battery life out laptop PCs is the holy grail of mobile computing. Powertop is a Linux tool to eek out those precious minutes of battery life by eliminating unnecessary power wasting processes.