I'm looking at buying a battery case for my iPhone 5. The case is MFi certified, so it also has the capability to charge and sync while in the case. The kicker is that is uses a micro-usb cable to charge/sync. So my question is how do I use this and still connect to my AppRadio 2? I currently have the lightning av adapter

I have a Mophie case on mine...I just remove the bottom part of the case and use the lightning av adapter cable..