Hey all, just got a new 3GS and I love the thing, however the battery on it drains a little to fast. I've looked at both Incase's and Mophie's power cases, however they both use the mini-USB connector. I hook my iPhone into my car many times a day using the standard apple connector. Are there any power cases that offer a pass through on the normal 30pin connector? Alternatively, has anyone tried one of these cases and attached there phone to an Avic F series using the mini-USB cable?