Just got home from a long trip and opened my new eGo-twist. I was so excited and I must say, I think i will enjoy it when I get the hang of it. The problem is...how do I charge it? I have an eGo-c passthrough but don't know if I am supposed to use it as I don't see how to plug it in. Am I missing something? I know I am tired but how in the world do I charge this?