On my Samsung Galaxy Tab Pro 8.4 the battery life is poor and not consistent to be honest ... It can get 5 hours of sceen time(which is and good and long enough for me) for a couple days everytime i restarted the Tab Pro 8.4 or cleared the cache. But after a few days it goes down hill and i get only 3/4 hours of sceen time even when i just doing light stuff like web browsing or watching videos. I don't really play game a lot on my Samsung Galaxy Tab Pro 8.4 and i always have my brightness under 40% and have things like Bluetooth, GPS etc off and i use the "Power saving mode" all the time and i keep on force closing apps/games to stop draning the battery life but it still does not make a big difference... Maybe because of TouchWiz is draining the battery faster than normal but i don't really know?..... Just wondering does this happen to you? And How to keep getting good enough battery life(5 hours of sceen time) all the time? And why everytime i restart my Tab Pro 8.4 and i could get 5 hours of sceen time but after a few days it goes down hill and can only get 3/4 MAX of sceen time on every single charge?.. I really WANT to get good battery life(5 hours of sceen time) all the time on my Tab Pro 8.4 because that is good and long enough for me.