One of the splashiest claims in the announcement was that cells would have an energy density of 400 watt-hours per kilogram (the top commercial lithium-ion batteries today sit at about 250 to 300 Wh/kg). It was also claimed that the cells could charge in as little as five minutes, last 100,000 cycles, and retain 99% of capacity at high and low temperatures—while costing less than lithium-ion cells and being made from “100% green and abundant materials with global availability.”
They've begun to publish third part testing.
I posted about Donut Lab before. Their parent company makes EV super bikes and Donut Lab does their R&D and resells it. Afaik they don't have a history of making sensational claims, but a chemical engineering breakthrough of this magnitude does seem unlikely.
A friend of mine is a battery physicist at a flying car company, and is also world class at being skeptical, so perhaps once they release more evidence I'll reach out and ask what he thinks.
Very cool
This is such a wild sentence lol
I was so surprised when he told me he went to work at a flying car company. They've been around for years though, have raised billions of dollars, and above all he's skeptical of his market value.