I tried mophie. I like the uNu much better (http://www.myunu.com/products/battery-case.html http://www.myunu.com/products/battery-case.html) Specifically the u

I tried mophie. I like the uNu much better (http://www.myunu.com/products/battery-case.html http://www.myunu.com/products/battery-case.html) Specifically the uNu is actually certified by Apple unlike the Mophie (which is strange because Apple's stores carry the Mophie and don't carry the uNu. The uNu also connects the USB so you can sync, copy, etc through USB unlike the mophie