I have recently changed the format of my ipod (5th gen 30gb) form the mac HFS format to FAT32 so i can see my files on non mac systems. While i had my iPod in the mac format i noticed that the battery meter was about as inaccurate as it gets, if i touched the click wheel for 2 minutes the battery meter would have depleted by about a tenth and if i started playing a game while on 75% charge it would have instantly gone into the "red" zone of the battery. The meter would instantly shoot up after i stop playing the game .I once tested it to see how much playing time i could get out of an ipod while on red battery life, while playing music and solitaire i got over 2 hours of work out of the iPod. Now that my iPod is formatted as a FAT32 drive the battery meter steadily goes down rather than constantly jumping up and down while being used and while playing games on the ipod the meter does seem to drop as quickly. I haven't yet been bothered to do a test. but i am interested in knowing whether windows formatted 5th gen ipod just have more accurate batter meters? or if the FAT32 formate allows the ipod to run for a longer period of time?