Summary of "Exposing The Solid State Donut Battery. It's Over."

Summary of the video’s investigation and claims

Donut Lab’s “solid-state donut battery” is presented as a major EV breakthrough—but the video argues it’s not what was promised. The channel claims Donut Lab (via a battery at CES 2026) advertised impossible/exceptional specs—~100,000 cycles, ~400 Wh/kg, ~5-minute fast charging, low cost, and no critical materials (including lithium)—and that these claims were used to attract attention, partnerships, and investment.
The creator frames the story as evidence supporting public accusations of deception or a “scam,” while noting legal caution. The video says that although lawyers recommended not using the word “scam” directly, it offers evidence backing already-public allegations. It also says Svault’s CEO publicly called it a scam.
A multi-company supply chain is mapped to explain how claims moved from patents to commercialization. The video connects:
- Donut Lab (spin-out tied to Verge Motorcycles) as the commercialization/marketing entity
- Nordic Nano (Finnish partner) described as the cell manufacturing partner—yet the video alleges it never manufactured any battery cells
- CT Coatings (German entity) as the alleged technology/patent source, specializing in “screen printing” including purported “solid state battery” work Additional companies mentioned as possibly linked or previously partnered include Santa Energy (Spanish) and Holly—with Holly’s CEO reportedly denying any current link to CT Coatings.
Origins and patent trail are portrayed as red-flag driven marketing rather than validated battery engineering. The video argues that CT Coatings’ patents are broad/overreaching and that early interactions with its founder/inventor (Ernst Holesenbine) involved wild investor-facing claims with little reliable evidence. It also alleges that battery experts encountered technical misunderstanding and buzzword-heavy descriptions (e.g., confusing lithium/rare-earth concepts and “bipolar design”).
Core technical claim: the promised cell type and the tested cell type do not match. The video says CT Coatings supposedly promised a screen-printed solid-state sodium-ion battery, potentially tied to a “paving slab” patent describing a high-temperature screen-printed solid-state sodium-ion battery. However, it argues that what Donut Lab actually tested (and published in its “I Donut Believe” test series) is a lithium-ion cell, not sodium-based solid-state.

Evidence the video uses to argue lithium-ion testing (not sodium-ion solid-state)

Voltage curves allegedly closely match high-nickel lithium-ion (NCM-like) behavior, and the video argues sodium-ion cells typically don’t reach comparable voltage ranges.
Cell expansion/contraction behavior during charge/discharge is presented as a “fingerprint.” The video claims the expansion pattern shows a graphite anode, which it argues is incompatible with sodium-ion chemistry (sodium ions are too large to fit graphite layers in the same way). Therefore, it concludes the tested cell uses a lithium-ion graphite anode.
Energy density estimates are said to align with high-energy lithium-ion expectations, using both third-party reporting for earlier CT Coatings cells and Donut Lab test/cell mass details.

The video argues the “breakthrough performance” is achievable with advanced lithium-ion—just not the promised sodium-ion solid-state miracle. It claims expert visits and industry examples show current lithium-ion can reach very high energy density and fast-charging under certain conditions (including silicon-containing anodes). It also suggests Donut Lab’s achieved pack performance may reflect real lithium-ion pouch-pack engineering—but that it still fails the marketing promise of a revolutionary screen-printed solid-state sodium system.
Several “barefaced lies” regarding production timelines and “production vehicles” are alleged.
- The video claims Donut Lab stated consumers would receive a production motorcycle within a quarter, and that a “first production motorcycle” was produced.
- It argues this was false because internal communications allegedly redefined the “first bikes” as internal fleet / pre-production, and later Finnish reporting is cited as admitting they had not delivered 400 Wh/kg batteries to customers and that different cell types might exist.
Financial misconduct / fundraising tactics are presented as the most damning part.
- The video claims Donut Lab raised money from many small retail investors after Verge’s demerger created Donut Lab, heavily leveraging the “miracle battery” narrative.
- It alleges the fundraising strategy relied on insufficient or controlled technical due diligence, targeting investors unlikely to challenge the claims.
- It cites shareholder-register figures and a previous Springvest crowdfunding/investment round (Verge-related) as feeding the investor base for Donut Lab.
- It highlights investor messaging with 10x return projections in 12–18 months, and argues this resembles a scheme-like dynamic given the alleged inability to substantiate the battery claims.
The video proposes incentives for misleading investors even if some believed early: “escalating commitment.” It suggests psychological escalation of commitment may explain why individuals might continue believing despite evidence, but it asserts that continued fundraising + suppression of scrutiny goes beyond naïveté and indicates intentional behavior.
Closing stance: The creator says the case harms engineers and the broader EV/energy community and argues accountability should follow. It also points to Finnish journalists and authorities as likely additional investigatory bodies.

Presenters / contributors mentioned

Ryan Inis (presenter / investigator; “Zerox deep dive”)
Marco Letaki (CEO, Donut Lab)
Lori Patullah (ex-chief commercial officer & co-founder, Nordic Nano)
Matias Ingvasen (CEO, Holly)
Vill (CTO, Donut Lab—spelled as “Vle/Vill” in subtitles)
Ernst Holesenbine (inventor, associated with CT Coatings)
Julian Zanau (Fraunhofer Research Institution, Germany)
Dr. Yahim San (university lecturer; later referenced as a battery-focused researcher)
Dr. Yohim San (subtitle alternate spelling; also referenced as a battery expert)
Dr. Yoim Hesca (Senyoki University of Applied Sciences; referenced as an expert)
Tom Bicha (CEO, Leona)
Professor Barry Store (referenced for “escalating commitment” research)
Nicolas Stoass (source for Finnish publication reporting)
Helsingin Sanomat (Finnish media outlet mentioned)
PWC (accounting firm mentioned regarding Verge audit)

Organizations mentioned (not individually presenting)

Nordic Nano / Donut Lab / CT Coatings / Verge Motorcycles / Svault / About Energy / VTT / About Energy / Springvest / Wildcat / Holly / Santa Energy