Guide

The EU battery passport registry and online system

The battery passport is backed by a Commission-established online system: the unique identifier and a defined set of passport data are registered centrally, and the data carrier resolves through it so passports remain findable for the retention period.

Last updated 1 June 2026

The passport is not just a page on a vendor’s website. The regulation provides for a central online system, established by the European Commission, that underpins the battery passport and keeps it findable independently of any single operator.

What the system does

  • Holds a register of unique identifiers for in-scope batteries.
  • Receives a defined set of passport data from economic operators.
  • Helps the data carrier resolve to the correct passport.
  • Supports continuity if an operator ceases to exist before the retention period ends.

Operator vs central system

RoleHeld by operatorHeld centrally
Full passport dataYesDefined subset
Unique identifier registerYesYes
Public access endpointYesResolution support
The exact technical specification of the registry and resolver is being set out in implementing and delegated acts. The practical takeaway: build your passport so the identifier and required data can be registered, not locked into a proprietary silo.

For a manufacturer or importer this means choosing infrastructure that can both serve the passport publicly and feed the central system once its interface is finalised, without re-issuing identifiers.

Frequently asked

Is the battery passport stored in one central EU database?

A defined subset of data and the unique identifiers are registered centrally, while the full passport is served by the responsible operator. The two are designed to work together.

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