Just found this! It looks like a really good case but the best part is that it gives you over double the capacity of the iPhones battery life. I know there was another case like this but it was way too unattractive compared to this one! Some crucial details!: Additional battery life provided by Power Slider Standby time: up to 330 hours Audio playback: up to 26 hours Talk time: up to 5 hours on 3G network and 10 hours on 2G network Video playback: up to 7 hours Internet use: up to 5 hours on 3G network and 6 hours on Wi-Fi Capacity equals approximately 120 percent of iPhone 3G 5 light LED battery status indicator And here is what it looks like! Additional info at the official website:http://goincase.com/products/detail/EC20003/5 It will go on sale next week <November 28th> and will set you back $99.95 but I think it will be worth it. Doesn't add an insane amount of bulk and really has everything a "real" battery pack should have! What do you guys think?