Galaxy S6 Edge :: How To Turn Off Screen Wake On Charge

I've found several times that my phone would wake in the middle of the night, which is rather annoying. I turned off notifications for any app that seemed to wake the phone, and I usually put the phone in "Do Not Disturb" mode at night. Now, the only thing that wakes it is when the battery becomes fully charged. How to stop the phone from doing this? I use the phone as my clock/alarm, so I don't want to turn the phone off. Since many people probably charge their phones next to their beds at night, this seems like a particularly dumb feature.