Battery standby problems
I got an iPod Touch 6th generation in July and later went into the genius bar because of battery standby and accuracy problems and got it swapped out for a new one free of charge. This new one seems the same. It has the same habit that the other one has which is that the battery drops to half charge when being left alone for a few days. I have all the background app refresh and push notification settings turned off so I don't understand why this happens. I know that the iPod is not capable of showing an accurate battery status because the gas gauge is turned off by Apple (and that's why it doesn't have battery percentage), but this seems to take it a little too far. Is this normal because the iPod's are just very inaccurate? Or did I get unlucky and got another bad one. Please respond because I am deciding whether to return it, go to the genius bar again, or just live with it.
iPod touch, iOS 9.0.2