10.1 tablet shuts itself off no reason, why

[Alan_1956]

After shut down get black battery with 0, then gate battery with better charge, which very's,

 

[webworkings]

Could be low battery even though it doesn't seem like it. If the battery is going bad or wearing out it would hold less and less of a charge, while saying it was still holding one.

It also could be the sleep settings on the tablet.