Basquevolt and Battera Technologies announce strategic collaboration to develop next-generation integrated battery solutions for high-performance aerospace applications

Vitoria-Gasteiz / Irún, October 2026. Basquevolt S.A., Europe's leading developer of lithium metal solid-state battery technology and manufacturer of high-energy-density battery cells, and Battera Technologies S.L., a specialist in the development, manufacturing and industrialisation of advanced battery systems, today announced a strategic roadmap to jointly develop and deliver integrated battery solutions targeting aerospace applications requiring the highest levels of energy density, safety, reliability and European sourcing.

A shared ambition: European-made batteries for high-performance applications worldwide

The partnership brings together two complementary technology capabilities: Basquevolt's design and manufacturing of next-generation electrolyte and lithium metal cells, which already deliver energy densities exceeding 400 Wh/kg, well beyond today’s commercial lithium-ion cells, and Battera’s battery system development, manufacturing and industrialisation capabilities, including experience in demanding aerospace programmes.

Building on this performance, both companies are targeting a clear roadmap to exceed 500 Wh/kg in the coming months, a performance threshold that positions their joint solution significantly ahead of any commercially available advanced battery systems globally.

"This collaboration marks a pivotal step in Basquevolt's strategy to deploy our technology in the highest-value applications where energy density is not a convenience but a critical requirement," said Pablo Fernández Santos, Managing Director of Basquevolt. "Battera brings its expertise in battery pack development, manufacturing and integration, enabling high-energy-density solutions with rapid industrialisation and scalable production. Together, we are building something that does not yet exist at scale in Europe.”

"At Battera, we believe that developing advanced battery solutions requires close collaboration between cell development and battery manufacturing from the start,” said Javier Llamazares, Managing Director of Battera Technologies. “Through this partnership, Basquevolt’s advanced lithium metal technology and cell manufacturing capabilities, together with Battera’s experience in battery pack development and manufacturing, will allow us to deliver batteries with high energy density, tailored to the needs of aerial platforms, with production capabilities and scalability not currently available in Europe."

Industrial production targeted for 2027, with the highest European content

Beyond research and development, the partnership is oriented from the outset toward industrial-scale production. Both companies have agreed on a phased industrialisation roadmap, with series production of integrated battery solutions targeted for 2027. The full value chain, from electrolyte and cell manufacturing to pack integration and system delivery, will be anchored in Europe, delivering what both companies believe will be the highest European content of any comparable high-performance battery solution available in the market.

The partnership reflects a deliberate commitment to European technological sovereignty in advanced battery technology, at a moment when access to high-performance, domestically produced battery solutions is increasingly recognised as a strategic priority across the continent.

About Basquevolt

Basquevolt S.A. is a European deep-tech company developing lithium metal solid-state battery technology, headquartered at the Álava Technology Park in Vitoria-Gasteiz, Spain. Founded in 2022 and backed by the European Innovation Council (EIC Accelerator) and leading industrial investors, Basquevolt has developed a proprietary solid-state electrolyte technology that is cathode-agnostic, compatible with existing lithium-ion manufacturing infrastructure, and capable of delivering energy densities exceeding 400 Wh/kg in current production cells. The company operates active Joint Development Agreements with European automotive OEMs, including Renault Group, and collaborations across aerospace, HAPS, and stationary storage applications.

About Battera Technologies

Battera Technologies S.L. is a European company based in Irún, Spain, specialising in the development, manufacturing and industrialisation of advanced battery systems for aerospace and a wider range of mobility applications. The company combines advanced battery pack development with expertise in manufacturing and integration technologies, focusing on industrial scale production and efficient manufacturing processes. Battera delivers battery solutions tailored to customer requirements, with a strong focus on scalability, reliability and rapid industrialisation.