# Donut Lab EV Battery Survives, 22°F Cold Test

> Donut Lab's solid-state battery retains 97% capacity after, 22°F cold test.
- Title: Donut Lab EV Battery Survives, 22°F Cold Test · Autoweek
- Summary: Donut Lab's solid-state battery retains 97% capacity after, 22°F cold test. Donut Lab's EV battery maintains 97% capacity after five hours at, 22°F, showing…
- Keywords: donut lab, solid-state battery, ev battery, cold test, battery capacity, vtt testing, cars, sports, Donut, Lab, Battery, Survives
- Source: Autoweek — https://autoweek.com/news/a74208401/donut-lab-ev-battery-cold-test
- Author: Natalie Neff
- Published: 2026-10-21T20:09:04+00:00
- Read time: 1 min
- Topics: donut lab, solid-state battery, ev battery, cold test, battery capacity, vtt testing, cars, sports
## Donut Lab Battery Test
Donut Lab says its battery technology cleared cold testing at, 22 degrees F.
## Test Methodology
VTT tested 14-cell module without insulation for five hours at, 22°F.
## Capacity Results
Module retained 97% capacity after five hours at, 22°F.
## Energy Output Drop
Energy output fell to 93% after cold test due to voltage drop.
## Real-World Expectations
Insulated vehicle housing should reduce cold impact on battery performance.
## CES 2026 Claim
Donut Lab claimed 99% capacity retention at, 22°F at CES 2026.
## Key takeaway

Donut Lab's EV battery maintains 97% capacity after five hours at, 22°F, showing potential for cold-weather EV performance.