Leaderboard

Hi, I'm new in the Minidisc world as i bought my first ever unit 2 days ago from the internet. The problem I have is that I cannot charge the flat battery(NH-10WN) of the MD. The adaptor is correct connected, and the battery is inserted correctly. I connect the adaptor to the plug of the MD and press the STOP/CANCEL/CRG button once and I get the display "Charging". After 2.5 hours I tried to play a disc but I was getting low battery, so I charged it for another 2.5 hours. That happened 4-5 times. The unit itself works ok when it"s connected to the adaptor. Am i doing something wrong or should i send the MD back to the place I bought it?