I suspect my iPod battery which I use every day, is dodgy. Would this be a good test seeing as Apple claim 'up to' 40 hours with music playback... Fully charge ipod, close all apps, reboot, turn off wifi and bluetooth set mail for manually fetch (or doesn't that matter if it's quit) and set a single song for continuous playback and see how close that gets to 40 hours. Or is there some other stuff that should also be disabled that might work in the background. With all this done should I not get pretty damn close to 40 hours with an iPod 6 gen and latest software that has been used for 9 months. What would be reasonable to expect? 30 hours? more, less?