MANIFOLD
Which promised metric will donut battery fail to deliver on.
4
Ṁ325Ṁ221
2027
83%
Energy density (400 Wh/kg)
76%
Charge cycle lifespan (100,000)
76%
Cost (Lower cost than lithium-ion batteries)
76%
Promised production volume
66%
Charge speed (Five-minute full charge)
66%
Uses only abundant materials without rare elements
50%
Fire safety (No thermal runaway in extreme conditions)
50%
Safe full discharge capability
50%
No active cooling requirement
50%
Performance in real-world vehicle conditions
48%
Temperature stability (99% capacity retention at -30°C, 99% capacity retention above 100°C)
34%
Geopolitically safe supply chain
34%
Flexible custom shapes and geometries

Resolution criteria

This market resolves based on which of Donut Lab's promised metrics fail to be independently verified or delivered in real-world conditions by the end of 2026. Resolution will be determined by:

  • Independent pack-level energy density measurements and cycle life data beyond cell-level thermal tests

  • Real-world performance data from Verge Motorcycles deliveries and independent teardowns

  • Third-party testing reports (prioritizing VTT Technical Research Centre and equivalent institutions)

  • Manufacturer specifications for production units actually delivered to customers

Each answer resolves YES if credible evidence demonstrates the metric was not achieved as promised. Answers resolve NO if independent verification confirms the metric was met. If a metric remains untested or unverifiable by end of 2027 it resolves YES

Background

Donut Lab announced a 400 Wh/kg solid-state cell at CES 2026 with claims of 100,000-cycle life and five-minute charging. At CES, Donut Lab presented bold specifications but did not provide live demonstrations, patent disclosures, or peer-reviewed research. The biggest established players in solid-state batteries — Toyota, Samsung SDI, CATL, and BYD — are all targeting 2027 or later for initial production, and none claim to have a production-ready cell matching all of Donut Lab's specifications simultaneously.

VTT Technical Research Centre of Finland conducted independent cell-level tests confirming that the battery maintained 107% of nominal capacity after multiple hours at 100°C. However, the claims that drew the harshest criticism from the battery industry, 400 Wh/kg energy density and 100,000-cycle life, remain completely untested.

Considerations

Donut Lab marketed this battery as needing no active cooling, but at 11C charge rates, even passive thermal management with a single heat sink proved insufficient, and in a real vehicle, consistent 11C charging will require some thermal engineering. Industry observers have calculated that scaling the specific ratio of passive thermal mass to a full-size EV pack would require thousands of pounds of heat sinks, but Donut Lab markets the battery as needing no active cooling.

VTT's reports have not included cell weight or physical dimensions, making independent verification of energy density impossible from the data provided.

  • Update 2026-03-24 (PST) (AI summary of creator comment): The intent is that a single battery cell must exhibit all performance metrics simultaneously. However, the creator acknowledges it is unclear how to select which specific battery will be used for resolution, and is seeking a clear method to prevent manipulation when choosing the reference 'Donut battery' for resolution purposes.

  • Update 2026-03-24 (PST) (AI summary of creator comment): The 'donut battery' used for resolution will be selected as follows:

    • If Donut Labs clearly claims a single battery as the solid-state battery announced on January 5, 2026, that battery is used.

    • If no single battery is claimed, the most performant battery (the one failing the fewest claims from this market) is selected as the 'donut battery'.

    • In case of a tie, the battery whose last confirmed claim was verified earliest is selected.

    • If still tied, batteries are enumerated and one is chosen via a true random number generator.

Market context
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It appears they are conducting different lab tests with different batteries, which would make individual performance results possible for many of these, without a single battery cell exhibiting all of them.

@bens Good point, let's clarify. The intent I believe most assume is that a single battery needs to exibith all of the performance metrics. However it is not clear cut how we select the battery we will resolve against. To prevent manipulation when resolving lets try to come up with a clear way to select what 'donut battery' actually is.

@bens To resolve ambiguity for now unless we land on a better approach I will use the following criteria. 'donut battery' is a battery that is produced by donut labs and donut labs claim it clearly as the solid state battery they announced on Jan 5. 2026. If donut labs does not claim a single battery, 'donut battery' is the battery that DOES NOT fail MOST of the original answer claims from this market. So for example if there are 4 batteries that donut tested, one of them failed 3 claims, and others failed 5 or 7 claims, we will deem the most performant battery - (the one that failed least claims) as the 'donut battery'. In case of a tie, e.g 2 competing batteries fail only one claim but not the same one, we will select as the 'donut battery' the one battery whose last confirmed claim happened earlier. If it is still a tie (impossible to determine which test happened earlier) we will enumerate the batteries and use trueRandom number generator to pick one of the tied batteries as the 'donut battery'

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