The battery is engineered to operate at temperatures as high as 150 degrees Celsius, according to the company.
Solid-state batteries replace the flammable liquid electrolyte used in many conventional lithium-ion cells with a solid material, potentially improving safety and durability.
The technology could be useful in demanding environments, including industrial equipment, aerospace applications and other systems exposed to intense heat.
Panasonic Energy, a major battery supplier and part of Japan’s Panasonic Group, has not indicated that the technology is ready for mass production or provided a commercial launch timeline.
The company’s announcement reflects a broader industry push to develop batteries that offer greater energy density, improved safety and longer operating lifespans. Solid-state designs remain difficult and expensive to manufacture at scale, however, and researchers continue to face challenges involving performance, reliability and production costs.