Just wanted to find out if this was normal for all us iPad Air 2 users. Overnight and throughout the day my battery usage stats go up by 4-5 mins every hour whilst In sleep mode. All apps are closed, I don't have any push settings on, no background app refresh or iCloud. Is this normal and does anyone know what it might be because overall after a full cycle drain the battery usage stats are quite inaccurate as I'm not even using the device and usage is going up? Thanks in advance for any helpful comments.