The battery passport is not a handful of fields. Annex XIII, read together with the regulation’s carbon-footprint, recycled-content and due-diligence articles, defines on the order of 80–90 individual attributes. They fall into seven clusters.
| Cluster | Examples | Typical tier |
|---|---|---|
| Identification | Manufacturer, model, batch/serial, unique identifier, manufacture date and place | Public |
| Technical specification | Chemistry, nominal voltage, capacity, weight, dimensions, expected lifetime | Public |
| Carbon footprint | Total footprint per functional unit, per life-cycle stage, performance class | Public |
| Recycled content | Recycled cobalt, lead, lithium and nickel shares | Public |
| Supply-chain due diligence | Due-diligence report, sourcing of critical raw materials | Public report / authority detail |
| Performance and durability | Rated capacity, internal resistance, round-trip efficiency, expected cycles | Public / legitimate interest |
| Lifecycle and dismantling | State of health, status, disassembly information, hazardous substances | Legitimate interest |
Static vs dynamic attributes
Most identification and specification attributes are static — fixed at manufacture. Performance, state of health and status are dynamic and must be updated over the battery’s life. The passport structure has to hold both without changing its public URL.
Where each cluster comes from
- Identification and technical specification: your own product data.
- Carbon footprint: the harmonised EU calculation methodology.
- Recycled content: supplier declarations for the active materials.
- Due diligence: your supply-chain due-diligence policy and report.
- Performance and state of health: the battery management system over the battery’s life.
Frequently asked
How many fields are in a battery passport?
There is no single official count, but the combined Annex XIII and related obligations amount to roughly 80–90 distinct attributes across seven clusters.
Is all of this data public?
No. Identification, specification, carbon footprint and recycled content are largely public; dismantling, hazardous-substance and detailed due-diligence data sit in the restricted tiers.