I purchased this from a HK based vendor and was stung. Although at the price I paid it wasnt worth the effort to send it back. It should of had 4gb but only had 1gb when I used the HP format tool. Anyway the battery on this unit was poor, so I began to look for a replacement. I found this on ebay and purchased it with the base that if it didnt fit I could sell it on.
If you try this mod just connect the red and black wire the white wire does not need to be soldered into place just cover the end with a little tape to prevent a short.
I hope this help anyone with a battery dead player.
ps the ebay seller name was bidatbid and is no longer registerted with ebay.