NASA tests solid-state batteries for future Moon missions

NASA researchers have reported progress on solid-state battery prototypes intended for future lunar operations. The SPEARS project replaces liquid electrolytes with solid materials that could better withstand the harsh conditions facing spacecraft, rovers and equipment on the Moon.

In thermal-vacuum tests at NASA Langley, small cells operated well at temperatures down to minus 60 degrees Celsius, with reduced performance down to minus 80. Separate exposure tests showed that the cells could survive even colder conditions without damage; that does not mean they can operate at those extremes.

The work is still technology development. NASA says engineers are preparing test hardware, and future development is needed before these cells power lunar missions.

Photograph: NASA/Ryan Hill, actual SPEARS laboratory prototype and testing; no lunar installation is pictured. NASA usage conditions apply.

Sources

• Joe Atkinson / NASA, October14,2026 — SPEARS battery research
• NASA/Ryan Hill — SPEARS laboratory photograph
• NASA image and media usage guidelines