Shared from twixb · electrek.co

Donut Lab’s ‘solid-state’ battery exposed as regular li-ion in damning investigation

electrek.co·Jun 8, 2026

An investigation by battery researcher Ziroth has revealed that Donut Lab's touted "solid-state" battery is actually a conventional lithium-ion cell, undermining the company's claims and raising concerns about the $25 million raised from over 1,300 small investors based on false promises. The findings include electrochemical evidence confirming the battery's true nature and highlight a network of companies involved in the misleading venture, prompting scrutiny from Finnish financial authorities.

This investigation into Donut Lab's fraudulent claims highlights the critical importance of rigorous due diligence in the cleantech investment space, particularly for emerging battery technologies. For a professional like you tracking greentech innovations, the key takeaway is to prioritize independent validation of technological claims before considering investment, especially in cases involving groundbreaking promises like those related to solid-state batteries. This incident underscores the necessity of skepticism and thorough scrutiny to protect investments and maintain credibility within the sector.

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