DENSO and TÜV Rheinland Japan publish white paper to guide EU Battery Passport compliance

DENSO Corporation and TÜV Rheinland Japan Ltd. have jointly developed a technical white paper on the Battery Passport initiative to support companies preparing for mandatory EU Battery Passports. The white paper provides an overview of global developments and summarizes key regulatory requirements under the EU Battery Regulation and the Ecodesign Regulation, including data definitions and IT architecture requirements. It grew out of a Memorandum of Understanding the two companies signed in September 2025 to promote Digital Product Passports.

Implementing a Battery Passport involves practical considerations that remain complex and not yet fully defined, the companies say. These include mechanisms for uniquely identifying individual batteries, managing dynamic data updated throughout a battery's lifecycle, controlling access for various stakeholders, and building system architectures that enable interoperability and continuous operation across distributed data sources. Companies are expected to assess the overall data and system requirements needed for regulatory compliance while determining the preparations and organizational structures required.

The white paper is intended for economic operators responsible for Battery Passport compliance, such as automotive manufacturers and battery manufacturers, as well as related businesses like component and cell manufacturers that may be required to provide Battery Passport-related data. Detailed specifications and related standardization activities are expected to continue evolving, and the companies say the white paper is meant to support a common understanding of implementation while providing insights into regulatory developments, standardization efforts, data-space interoperability, and practical challenges. Copies are available by completing a request form, though requests may be declined after review.