Looks like Nvidia 8-inch Shield Tablet has some extreme performance, which is going a little too far. The battery in tablet can overheat and cause a potential fire hazard. Right now, Nvidia is asking consumers to stop using the Shield tablets, except for backing up data.
When it launched the Shield Tablet, Nvidia made a big deal out of the extra thermal dissipation of its design, claiming it was double what you'd get from a typical tablet.
So the Shield Tablet was deliberately designed to handle greater loads and heat than usual, but apparently its battery hasn't lived up to the same high standards.
Nvidia has set up a replacement program and a dedicated website to help owners of Shield Tablets purchased between July of last year and today swap their faulty devices.