Tablet shuts down with full battery if unplugged

[msled]

I have a Next book NX785QC8G that shows full battery but if I unplug it it powers off instantly and says the battery is empty. I have had it only a few months and it has always been really difficult to turn it on also. I don't know much about technical stuff...can anyone help me figure out what is wrong or how to fix please?

 

[Saga Lout]

Sounds like time to take it back to the seller while it still has some remaining Warranty period. That battery is probably a dud.

 

[msled]

Thank you for your quick reply. This was a gift but I will see what I can do.