You may be excited about your new Note 4 and you are worried about how long to initially charge it. This is what I did and I get great battery life every day. Most Samsung Galaxy devices come with 50% battery life. You can read my other articles on the S4 and the S5 to get more information about the whole initial charging issue. What I did is simply let it drain to 20% then I filled it to 100% and unplugged it the moment the light turned green and it hit 100%. After that, I just let it fall back to 20% and then charge it back up to 80% percent because I heard that is a good thing to do for newer battery technology. Older battery tech needed hours and hours of charging before they would offer great battery life.
You don’t wanna end up buying a battery too soon so make sure you don’t install battery draining apps like Tango. The less you charge the longer your battery will last before needing replacement.