DENSO Corporation and TÜV Rheinland Japan Ltd. have collaborated to create a technical white paper focused on the Battery Passport initiative, which is set to become mandatory in the European Union by February 2027 under the EU Battery Regulation. This initiative targets battery products used in automotive and industrial applications.
The implementation of Battery Passports involves numerous practical challenges that remain complex and not yet fully defined. These challenges include mechanisms for uniquely identifying individual batteries, managing dynamic data updated throughout a battery’s lifecycle, access control for various stakeholders, and system architectures that enable interoperability and continuous operation across distributed data sources.
In September 2025, DENSO and TÜV Rheinland Japan signed a Memorandum of Understanding to promote Digital Product Passports, leveraging their combined expertise to develop the white paper. This document is intended to assist economic operators, including automotive and battery manufacturers, in understanding the requirements for compliance with the EU Battery Regulation.
The white paper offers an overview of global developments related to Battery Passports and outlines key regulatory requirements under the EU Battery Regulation and the Ecodesign Regulation. It addresses data definitions and IT architecture requirements crucial for compliance.
DENSO and TÜV Rheinland Japan aim to foster a common understanding of Battery Passport implementation through this white paper, providing insights into regulatory developments, standardization efforts, data-space interoperability, and practical implementation challenges. The document serves as a resource for businesses responsible for Battery Passport compliance and those required to provide related data.
The detailed specifications and standardization activities for Battery Passports are expected to evolve over the coming years. The white paper is available upon request, subject to review of the provided information.