Okay so pretty much loving everything being wireless and what not but I do have a small question about how the battery life on these are? So far I have been using my computer pretty heavy putting all of my previous information from my old computer onto the new one and also writing a lot of emails and listening to music and photo shop. I have not noticed the battery life or the keyboard life go down at all and I have been on it pretty much since I bought it except when I went to bed. So for people who do have the wireless setup how often do we have to replace the batteries? What's like the typical life span on the batteries? Thanks! I am just curious thinking maybe I should stock up on them? LOL! Thanks for the help people!