QuantumScape Shares Climb on Breakthrough in Battery Production

Dow Jones

Jun 25, 2025

By Dean Seal

Shares of QuantumScape soared after the company said it made a big leap forward in its process for making solid-state batteries.

The stock was up 21% at $5.23 after hours. The stock closed the down 17% year-to-date through Tuesday.

The battery startup said after the bell that it has successfully integrated its advanced Cobra separator process into baseline cell production.

The process is designed to enable faster and more energy-efficient battery production with a smaller equipment footprint. Compared with its previous Raptor process, Cobra has a heat treatment speed that is 25 times faster while occupying a fraction of the physical space that Raptor required.

Chief Executive Siva Sivaram said Cobra provides the company a path for commercializing its battery technology.

Write to Dean Seal at dean.seal@wsj.com

(END) Dow Jones Newswires

June 24, 2025 17:53 ET (21:53 GMT)

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The stock closed the down 17% year-to-date through Tuesday. \n</p>\n<p>\n  The battery startup said after the bell that it has successfully integrated its advanced Cobra separator process into baseline cell production. \n</p>\n<p>\n  The process is designed to enable faster and more energy-efficient battery production with a smaller equipment footprint. 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The stock closed the down 17% year-to-date through Tuesday. \n\n\n  The battery startup said after the bell that it has successfully integrated its advanced Cobra separator process into baseline cell production. \n\n\n  The process is designed to enable faster and more energy-efficient battery production with a smaller equipment footprint. 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