Donut Lab hits 409 Wh/kg in battery lab test, but credibility is gone
Electrek • 9/2/2026
Summary
Donut Lab has published an independent test claiming its battery achieved an energy density of 409 Wh/kg and 805 Wh/L. This is the first energy-density figure the company has reported after months of scrutiny. However, the company has not fulfilled its promise that this “solid-state” cell would be in production and ready to power a production EV by the end of Q1 2026.
Advertisement
Lindy Score Breakdown (V4.2)
3h
Age
1
Sources
from cluster
2
Hours Since Seen
Final Score12/100
CategoryAntiLindy
StatusActive
Recency Multiplier97% (0.5^2/48)
Hero EligibleYes
Score BreakdownRisk 70
Source Reputation: Low-trust source (4/20 pts)
Consensus: Single source - no independent confirmation yet
Age: Breaking news - too recent to assess longevity
Stories gain Lindy status through source reputation, network consensus, and time survival.
Breaking Similar stories
Magna increases bet on battery swapping in India with $35M for Yuma
TechCrunch • 1 day ago
This 3-Year-Old Tesla Model Y Went 100,000 Miles And Barely Fast-Charged. Here's How The Battery Held Up
InsideEVs • 1 day ago
The US added a record 20.2 GWh of battery storage in just 3 months
Electrek • 1 day ago
Can You Jump Start A Dead Motorcycle With A Car Battery?
Jalopnik • Today
Elon Musk’s heterodox robotaxi philosophy gets put to the test
The Verge • Today
AI flags heart disease from routine ECG test within seconds
mugglehead.com • 1 day ago
NeoVolta’s US battery factory gets a 9 GWh boost from SK On
Electrek • Today
Google needs Hollywood more than the studios need AI
The Verge • Today
Anthropic’s new Fable release is cheaper, less restrictive
TechCrunch • Today
Samsung's new Galaxy Book 6 model is a budget-friendly $799 laptop
Engadget • 1 day ago
Anti-Lindy Similar stories
Chevy Equinox EV vs Kia EV3: Which is America’s most affordable 315+ mile range EV?
Electrek • 2 weeks ago
Kia's EV3 will start under $31,000 in the US
Engadget • 2 weeks ago
Ford on track to complete $2B factory overhaul for Fathom EV truck
TechCrunch • 2 weeks ago
NASA Can't Rescue The Satellite That Was Going To Rescue Another Satellite After All
Jalopnik • 1 week ago
Hugging Face’s new robot is an adorable rollerskating duck
The Verge • 6 days ago
NASA calls off mission to rescue the falling Swift observatory
Engadget • 1 week ago
Tesla discontinues its Solar Roof tiles, not economically viable
Electrek • 1 week ago
NASA calls off mission to rescue Swift gamma-ray observatory
Ars Technica • 1 week ago
Kia announces EV3 prices for the US and Canada as its most affordable EV
Electrek • 2 weeks ago
Tesla sunsets its Solar Roof tiles
The Verge • 1 week ago