Why does my battery drain so fast on my note 4?

[AC Question]

I have a note 4 and when i first bought it the battery time was great and now when i charge it full it says that i only got 10 hours left on the battery and even tho i have factory reset it and i bought a new battery it still says 10 hours on a full charge. I have also tried the safe mode and removed some apps but the problem is still there. How can i fix this??