Data requirements
Connect product identity, composition, performance, and lifecycle information with source records.
Build a field register, not just a spreadsheet
Connect each proposed information field to its definition, evidence, responsible owner, and update process. Keep legal applicability separate from optional internal information.
Useful starting points
- Map applicable fields to the primary requirements.
- Record units, evidence references, and unresolved gaps.
- Assign maintenance owners and appropriate access.
Guides in this topic
Annex XIII field groups explained: the four points that organise a battery passport
Annex XIII organises passport information into four points by audience, and reading a record starts with knowing which point a field belongs to.
Battery passport data requirements
A practical field-register method for Annex XIII data, model and unit records, evidence, ownership and access.
Carbon and recycled content fields: where footprint and recycled shares sit in a passport
Carbon and recycled content fields are model declarations with a stated scope and method, and timing for both duties depends on delegated acts.
Changing specifications and versions: how a passport handles a revised battery model
A specification change creates a version, not an edit, and units made before and after the change keep different record links.
Checking a record for completeness: a point by point pass over a battery passport
A completeness check works point by point through Annex XIII, in tier order, and records a pass, gap or not checked result for every applicable field.
Composition and materials fields: what a passport says about chemistry, materials and critical raw materials
Composition fields separate a public summary from authorised detail, and each material statement needs a scope, a basis and a date.
Due diligence evidence fields: what a passport shows about responsible sourcing
Due diligence fields link a passport to a policy, a risk assessment and third party verification, without turning the record into the policy itself.
Field register method: building a register that tracks every passport field by type
A field register tracks each Annex XIII field by type, owner, source, tier and status, so that a record can be checked without re-reading the whole Regulation each time.
Identity fields: manufacturer, model identifier and unique identifier in a battery passport
Identity fields anchor every other passport field, and a mismatch in identity invalidates reliance on the rest of the record.
Missing data and gaps: stating what a passport does not yet show
Missing data is stated as a gap with a reason and a remedy, never filled by inference, carrying forward, or a neighbouring value.
Performance and durability fields: capacity, efficiency, resistance and cycle life in a passport
Performance fields are test results with conditions, not promises, and a value without its reference conditions cannot be compared.
Safety and marking fields: CE marking, symbols, warnings and safety measures in a passport
Safety and marking fields separate what is printed on the battery from what is held in the authorised tier, and neither replaces the other.
State of health fields: what a passport shows about a battery as it ages
State of health fields are dated unit measurements with a stated method, and a single figure without a date and a method cannot support a decision.