T800 power issue

I was wondering if anybody else had this issue with the T800 or a solution to it. I usually leave my tablet on. Sometimes when I come back and try to use it the screen won't turn on. I can plug it in and I get no charging indication either. The only way I can get it to turn back on is by pressing the power button and volume down button at the same time. When this happens the lowest the battery has ever been was 57 percent. Anybody know what causes it?

Sent from my SM-N910T using Tapatalk