Energy
Donut Lab Battery Keeps 97.7% Charge After 10 Days Idle
Independent testing confirms Donut Lab's solid-state battery retains 97.7% charge after 10 days, but the startup's most extraordinary claims remain unverified.
Key Takeaways
- Third VTT test confirms 97.7% charge retention over 10 days
- Most extraordinary energy density and charging speed claims remain untested
- Uses proprietary ceramic electrolyte compatible with existing manufacturing
- Consistent results across cells suggest viable manufacturing process
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DT Editorial AI··via electrek.co