I have a Lenovo z570 running ubuntu 12.10 with a battery life approximately 1hr 30 min. Please help me maximize the battery life of my lenovo
You can fire up the Terminal and paste this command in:
sudo apt-get install laptop-mode-tools
restart your laptop
After rebooted, it should start by itself if you are running on battery. You might want to check out Hectic Geek's LMT page. It is very comprehensive. Good luck!
Based on your model, if it has an nVidia discrete graphics card, you can use Bumblebee to disable it. Here is the instruction page.