I could be wrong but I don't believe battery percentage is available on the iPods.BTW I have noticed and verified that the Battery Percentage feature does not appear to work only on my iPod Touch 6th Generation. All my other IOS devices with the same 9.3 version have no issues. iPad Air 2 no issues, iPhone 6 Plus no issues, but the iPod Touch has no option under Settings / Battery to enable the battery percentage - it simply does not exist. I have logged feedback for this via the Feedback App.