i also have a charging problem. i have a sharp md from japan and i can't seem to charge the battery. i even bought a new battery for it. i've never had this problem before. i did plug it into the wrong voltage outlet while i was traveling, but when i brought it home it was still working, it's just that the ac adaptor wasn't. i bought a new adaptor that appears to work, when i try and charge it the lights for charging are on, but it never gets charged.