Hi. The battery life on the Edge+ has been abysmal for me to say the least. The very first time I fully charged the device, my battery would go from 100 to 99 in like a minute and half of scrolling around the home screen.
But I'm happy to say that after a lot of trial and error, I managed to do something that has greatly improved my battery life (Although Cell Standby usage is still abnormally high). I disabled the Google Now app, and uninstalled Papergarden and Telly which were preinstalled and useless to me. This method has somehow improved my battery life and now I can easily power through a whole day with moderate to heavy usage.
Hope this works for others having poor battery life as well. I have the unlocked variant (SM-G928C)