tech
March 24, 2026
Donut Lab's Solid-State Battery Could Barely Hold a Charge After Getting Damaged
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TL;DR
- Donut Lab conducted damage tests on its solid-state battery.
- After the tests, the battery's energy capacity dropped by approximately 55%, and its thickness increased by 17%.
- The battery did not catch fire or experience thermal runaway, which Donut Lab considers a success.
- The company claims the battery fails 'gracefully' by operating at reduced capacity rather than posing a danger.
- Donut Lab has yet to provide independent verification for its claimed lifespan of 100,000 cycles or its energy density of 400 Wh/kg.
- Previous tests included speed charging, extreme heat, and not-a-supercapacitor tests.
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