Origineel bericht door: Marc ,
panjiiriawan, First off I want to say this is a best guess answer on my part but I have seen this on a macbook pro. The battery percentage is estimated and fluctuates with what is running in the back and foreground including the wifi, the backlight for the lcd, the lcd itself etc. It is not uncommon for it to do exactly what you are describing granted that there are always programs running in the background. I wouldn't worry about it. Wear down the battery below 20% and then fully charge the iPod once a month best using a wall charger overnight. Keep an eye on how long it lasts and when you start noticing it having to be charged often without much use it is time to replace the battery. Hope that helps give you peace of mind!