This thing is 4 days old. And I have to charge it at least twice a day. The main selling point for me was the "extraordinary battery life".
Any ideas? Do I need to return it?
Well, you should at least take a look at your battery stats and see if anything is standing out as sucking your battery life. Based on the info you gave, not else can be stated. Did you do any troubleshooting? Did you try resetting it? Did you check the battery stats already? So much more info could be relayed here to help you out. You might want to consider signing up for an account so you can reply with more details.