Hi! My internal battery for my Sony MZ-N10 has a problem. I think I need a brand new one but I can't figure where to find one. The model of the battery is Sony LIP-3WMB. There's none on Ebay and none on the net for sale. If anyone can find me such a battery I would be extremely grateful. Now the description of the problem: It seems lately that after I fully charge my MZ-N10 and I also add a fresh brand new AA extra battery, after less than one hour of playing and one day of not using the unit, the battery is out completely. I mean the unit displays "LOW BATT" and that's it although I charged the internal battery for one night and I added the fresh Duracell Rechargeable Accu (AA NiMH). What the hell is going on? Even if the internal battery would be out quick, then shouldn't the external AA battery take over and hold for hours and hours of play time? Another scenario happened to me yesterday. I fully charged the N10 for one night. I took it out in the morning and played 2-3 songs while shopping. I came home, left the unit on a shelf and today when I wanted to play a song there's the sign "LOW BATT". I mean... what the hell is going on? Is the battery drained out or what? Please, any solutions? If the battery is gone, can you please tell me where to buy a replacement? I wasn't able to find any LIP-3WMB on the net. Thanks !