So maybe two months ago I noticed that I couldn't connect the tablet to my PC to transfer files. The PC says it doesn't recognize it. Thought at first it was because I had just updated to Windows 10. So I took the tablet to work to see if it would connect and still nothing. So I researched a little and read that it might be the usb cable or the Charging Port. So I order new ones and tried those but that still wasn't working. (So I used my mini sd card and didn't worry anymore about it. I should say here that I started using the first original usb cable again and put the new one away.) Until last week when I went to charge the tablet, while using it, and it continued to discharge. I thought that was strange since normally it still charges but slower. So I stopped using it, still discharging. Turned it off and finally it started charging. The next day it was fine. Would charge both on, and in use. So again I wasn't worried. Now this week It would not charge at all. Not electrically. Not on the PC. Not off. Nothing. So again I researched and tried a few things: - took it to work to see if a different electrical current made a difference -> still wouldn't charge - tried work PC -> wouldn't charge - went home and tried the new usb cable from two months ago -> started charging but so slow that it took maybe 12/13hrs to get to 100% but now there was a big red X over the battery. - tried charging it on the pc for 5 hours (did this two days in a row)-> charged but still has an X - then this morning I thought to charge it directly on the wall, not through a surge protector -> and the X was gone - since I had to get to work, again I took it with me, plugged it into a wall socket -> no change in 2 hours - at work on the pc -> charged 1% in 40 minutes So I'm not sure. I'm glad the X is gone but I'm leery to say it was the wall socket since it's on my work computer now and there's no X when there was one a few days ago on it. Of course I want to assume that the problem is the battery but maybe not. Both the usb cable and the wall plug are Samsung. The plug is the original. I bought my tablet towards the end of 2012, so it is 'old'. Any other suggestions? I really do love my tablet and would hate to get rid of it. edit: not charging at all again. But also no X.