A:
I highly recommend fully charging prior to use and draining it down to 10%. Then charge it fully before use again. Do this the first few times and you will maximize battery life. ONLY USE Samsung charge cord. You should never use cheap no name cords.
Draining issue's people are facing is because they do not go into the folders and turn off background objects from running at will. They also do not utilize POWERSAVING mode and Auto screen adjustment(brightness). Lastly, Live wallpapers and screensavers should be avoided.
I use my tablet for 3-4hrs every night and only have to charge once every few days.