I saw this being hyped on YouTube the other day. My main concern is that there is a large lithium ion battery in a machine that is designed to get things hot. You do not want thermal runaway to happen with a battery that large inside your kitchen.

Their website says

> We’re designing and manufacturing the stovetop, battery pack, and key internal components to comply with all relevant UL standards and other applicable compliance requirements.

but this device appears to be for sale, right now. Either it is designed for safety already or it isn’t. WHICH UL safety standards? Is there an emergency shutoff? A regular old fire extinguisher probably is not going to cut it.