Our factory

At WATTALPS, 100% of our battery packs are designed and produced in our own facility in France.

Our industrial production chain has been audited and validated by major OEMs and certification bodies of our industry.

This ensures reliability and uncompromising quality at every stage.

Illustration

Premium components

Cells

All our modules contain standard-format standard cylindrical cells cyclindric cells. This format is one of the most widely adopted in the battery industry. It is robust, easier to cool with immersion cooling, and is supported by a strong, diverse supply chain. Besides, a wide range of cell chemistries is available in this format.

We source the cells from renowned suppliers, primarily in Korea and Japan, with European stock availability, to ensure both high quality and availability.

Other components

95% of our remaining components are supplied by certified European manufacturers, guaranteeing consistent quality and availability.

Patented thermal management system

Technological partnerships

Our proprietary thermal management system was developed with the know-how and expertise of CEA, a renown French technology research institute. It operates alongside state-of-the-art safety electronics, firstly developed with Fraunhofer IISB, a respected German research institute. These two technologies, along with strict product development standards, ensure exceptional safety and battery lifespan across all applications.

Patents

7 patents protect our immersion cooling technology.

Traceability

Industrial welding robot

Cutting-edge automation ensures consistent weld quality and complete traceability. Every single weld is automatically inspected, with results recorded for quality monitoring.

Component testing

Full traceability is maintained for all critical components, with testing performed at the cell, module and pack levels.

Repeatability

Our high-quality module assembly process is designed to be repeatable and reproducible, enabling production of up to 50 MWh per year while maintaining strict quality standards.

Quality control & certification

Quality control

More than 10 rigorous quality control steps are applied to 100% of our production. Every stage of the production line is monitored and logged in a secure server, ensuring complete transparency and reliability of the products delivered to our customers.

Certification

⊕ ISO 9001 certificate

Our quality management system is certified to ISO 9001 standards.