Why Is Everyone Trying to Build a Solid-State Battery? | Hacker News

A Hacker News thread weighed the promise of solid-state batteries against key technical limits.

Commenters pointed to persistent challenges like dendrite growth, narrow operating temperature ranges, and slow ion transport.

The discussion also compared broader battery progress across EVs and charging systems, including Tesla, BMW i3, Polestar 2, and BYD.

Despite the hurdles, solid-state batteries remain a major goal for safer, higher-performance energy storage.