More info ...
This battery cover has four corner/edge nubs instead of just two on the regular cover. SO ... when your Touch is on it's back it doesn't rattle or rock when you tap on it with your stylus. THAT WAS VERY ANNOYING TO ME! lol
Also, i was wondering if the battery cover was hollow in the places where the battery wasn't coming in contact. It is a hollow shell cover, but it is sturdy. I haven't had any issues with it. If anything, it would be a GREAT place to stash cool stuff like a rolled up $100 bill, a spare MicroSD card, drugs ... use your imagination!