Hi Guys, Have a bit of an issue I need a hand with. I recently upgraded to the Samsung Galaxy Tab S2 LTE so I wanted to sell my old Tab 3, however, I seem to be having a battery issue. I reset the tablet so I could sell it, I charged it up fully (Took about 6 hours) and I then switched it off. I went to try and use it the next day and the battery had fully drained when powered off. I charged it up again and I was using it and battery decline was normal when powered on, I switched it off again at around 70% and the next day again the battery was flat. Any ideas what the isssue is and how to go about fixing it? I have the tablet about 2 years 4 months so I am out of warranty.