I have a NextBook Ares 8 it's fully charged and the WiFi is not on and I have a calibration app but my tablet goes immediately

[Amber_4]

I have a NextBook Ares 8 it's fully charged and the WiFi is not on and I have a calibration app but my tablet goes immediately to 0%. What do I do to fix this?

 

[hang-the-9]

What is the issue here? Your battery won't stay charged? Try a different charger, try a different battery if it's removable. If not removable, it may still be possible to replace it with some tools by cracking it open.