Hi Jan, No I dont think you are doing anything wrong as I also have a Vizion Mp4 player purchased from the same place and have the same trouble, the instruction manual is very vague in the extreme. I have left it on charge for 14 hours to get a full battery display and only get a maximum of 4 hours playback, it was advertised as an 8 hour playback time on price drop tv, I too am seriously fed up with it and thinking of sending it back and getting something I can charge by mains electric.
jilly, April 2008