Nice! How does the runtime compare? (I would not go by the maH spec on the Deal Extreme battery, if the bogus ratings marked on cheap cell phone batteries are any indication).
I had remembered reading somewhere that the Clip uses the same battery as a 1gen Ipod Nano but I could be wrong.
Anyway this is good to know. I couldn't find any small enough batteries so figured when my Clip went dead I would just strap a cellular phone battery to the back of the player with wires going into the player, ending up with a sandwich-like thing. The pocket clip would be removed, resulting in the remaining combo having about the same thickness as the original player with the clip.