#solid-state battery

All articles tagged with "solid-state battery"

Solid-state battery tests point to wider temperature resilience

Researchers say a new solid-state polymer electrolyte helped lithium metal batteries operate in tests spanning deep cold to high heat.

Key Takeaways

Researchers developed a new solid-state polymer electrolyte.
The material reportedly supported operation from minus 40C to 55C in tests.

DT Editorial Team·Jun 4, 2026·via interestingengineering.com

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

DT Editorial Team·Mar 10, 2026·4 min read·via electrek.co

Donut Lab Solid-State Battery Survives 100C in Independent Test

Finland's VTT research center confirmed Donut Lab's solid-state cell gained capacity at extreme heat, but key claims on density and cycle life remain unverified.

Key Takeaways

Cell delivered 110% of rated capacity at 80C in independent VTT testing
Battery survived 100C discharge but lost pouch vacuum seal

DT Editorial Team·Mar 2, 2026·4 min read·via electrek.co