How to optimize laptop battery life with TLP on Linux

When using Linux on mobile devices such as Laptops, it is very important to tune the right kernel parameters in order to optimize battery life. Tlp is a highly customizable, free and open source command line utility released under the GPLv2 license (the source code is hosted on github) created with this exact goal. In this tutorial we see how to install Tlp on some of the most used Linux distributions, and how to configure it.