I have a number of questions about the ClamCase that some of you may be able to answer and then maybe not: 1. If there is an extra battery inside (and it appears there is if it can run for 90 hours!!!), how does it connect to the iPad? 2. I assume that the keyboard can't do all the touch screen functions and there are still some functions that require the user to select icons on-screen, and if this is true does touching those icons upset the balance of the whole device (such that you have to support the back of the iPad when pressing the screen)? Thanks for any input on these questions.