I am also experiencing the drained battery without any usage problem. My 5 years older iPad never does this. I can leave my iPad for weeks and go back to it... battery might have drained 10%. My Samsung Galaxy S2 8.0 tablet... drains about 50% per day without any usage. I have fully charged it to 100% and then picked it up two days later to stare at a black screen... until I plug it in to find out the battery has drained completely.
One of the people on here posted about his/her case possibly causing the issue. I have an official Samsung Folio case which was really tough to attach. I am going to remove it and see if that fixes the issue. If it doesn't, then I'll try the factory reset.
Can you tell us if the battery drain remains the same while the tablet is in safe mode?
I can do that but it's been since the last security update this year that the battery is draining fast. They are just going to reflash the same update which is what I have.
If everyone with a tab S2 is having battery drain only after the latest software update how would it be the device all of the sudden for everyone that is the problem? For years the devices battery is great and then right after a software update everyone's battery is draining fast. How is the possibly everyone's device?