Donut Lab’s solid-state battery claim debunked by Ziroth
A Verge story says Ryan Inis Hughes has debunked Donut Lab’s claimed solid-state battery, finding it behaves like a normal lithium-ion cell.
Intelligence analysis by GPT-5.4 Mini
The Verge reports that YouTuber Ryan Inis Hughes used expert analysis and whistleblower testimony to challenge Donut Lab’s battery claims. The piece argues the company may have used selective testing and opaque corporate structures to make an ordinary lithium-ion battery look like a breakthrough.
A company said it had a super special battery, but an investigator and many experts looked closely and said it was really just a normal battery wearing a costume. It is like someone claiming a toy car is a rocket after only painting it silver.
Analysis
What the investigation claims
The Verge says Ryan Inis Hughes, via his Ziroth YouTube channel, has thoroughly debunked Donut Lab’s claim that it had a solid-state battery ready for mass production. Hughes, according to the article, worked with whistleblower Lauri Peltola, the former chief commercial officer of Nordic Nano Group, and consulted more than 20 independent battery experts.
Those experts reportedly examined voltage curves, cell expansion data, and electrochemical signatures. Their conclusion, as described by The Verge, was that the battery behaved like a standard lithium-ion NMC cell rather than a solid-state design. The article also says Hughes accused Donut Lab CEO Marko Lehtimäki of “authority laundering” by using tests from Finland’s VTT Technical Research Centre to create an impression of legitimacy.
What was left unanswered
The Verge notes that VTT did not directly address the two claims that mattered most: the alleged 400Wh/kg energy density and the promised 100,000-cycle lifespan. The article also says Hughes dug into shell companies tied to Lehtimäki, along with financial dealings and fundraising tactics that could amount to fraudulent misconduct.
The piece frames the investigation as a detailed challenge to a story that sounded extraordinary but may have rested on selective evidence. It ends by saying the future for Lehtimäki, Donut Lab, and its retail investors is unclear.
Key points
- The Verge says Ryan Inis Hughes debunked Donut Lab’s solid-state battery claim on his Ziroth channel.
- Hughes reportedly consulted more than 20 independent battery experts and a whistleblower from Nordic Nano Group.
- The analysis allegedly showed the cell behaving like a standard lithium-ion NMC battery, not a solid-state battery.
- The article says VTT testing did not answer the biggest claims: 400Wh/kg energy density and 100,000-cycle life.
- The Verge says Hughes also examined shell companies and fundraising methods that could point to fraudulent misconduct.
If the investigation is correct, it could stop more investors and buyers from being misled by unrealistic battery claims. It may also push the industry to demand better proof before treating a startup as a breakthrough leader.
If Donut Lab’s claims were deceptive, retail investors could face losses and confidence in battery startups could take a hit. The article also suggests the situation could lead to scrutiny over testing practices, corporate opacity, and possible misconduct.
