The EU Battery Passport is the most data-heavy passport of them all — roughly 110 attributes per battery, defined under the EU Battery Regulation (2023/1542) and the technical work behind it (DIN DKE SPEC 99100). Here is what those fields actually are, and where the data comes from.
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The shape of it: about 110 attributes across seven families, at model, batch or item granularity — and for many batteries it is per individual item. Each attribute needs its supporting evidence.
The seven data families
Identity — battery identifier (via GS1 Digital Link), category, manufacturer and manufacturing site, date of placing on market.
Performance & durability — rated and remaining capacity, power, internal resistance, expected and remaining cycle life, state of health.
Carbon footprint — the battery's carbon footprint and performance class.
Recycled content — recycled cobalt, nickel, lithium and lead.
Due diligence — the supply-chain due-diligence report.
End of life — collection, recycling and safe-handling information.
The complete field list, with counts
The seven families above are how the Regulation groups the requirement. Implemented against Annex XIII and the harmonised German standard DIN DKE SPEC 99100:2025, the battery profile resolves to 110 individual attributes, of which 94 are mandatory from 18 February 2027. Their distribution is uneven, and that matters for planning:
Performance — 22 attributes, and dynamic in-use data — 21. Together these are the largest share, and the in-use group cannot be filled in at launch because the values do not exist yet.
Identity — 13, and recycled content — 13. Recycled content is four separate metals with pre- and post-consumer shares, not one percentage.
Carbon footprint — 9, compliance — 6, materials — 6, end of life — 5, durability — 5, supply-chain due diligence — 4, repair — 4, test results — 2.
Access is not uniform either: 82 attributes are publicly accessible, 26 are restricted to those with a legitimate interest (recyclers, repairers, second-life operators) and 2 are limited to notified bodies and market-surveillance authorities.
See the complete field list → — every attribute with its key, datatype, access tier and mandatory status, filterable and free to use. It is the reference version of this page.
Granularity — often per item
Unlike model-level passports for many product groups, batteries frequently require item-level data (one passport per physical battery), because dynamic fields like state of health change over the battery's life. Item-level granularity is the main cost driver, and the reason data automation matters.
Where the data comes from
Most of it already exists, scattered: cell datasheets and supplier declarations (chemistry, materials, recycled content), your own test data (capacity, cycle life), an LCA (carbon footprint), and your due-diligence policy. The job is structuring and evidencing it — which is exactly what PassPer does from the documents you hold.
Who sees what
The same passport serves tiered views: a public view for consumers, a professional view for repairers and recyclers, and an authority view for market surveillance — enforced at the resolver, not by trust.
Frequently asked questions
How many data fields does the battery passport have?
Around 110 attributes per battery, across identity, chemistry, performance/durability, carbon footprint, recycled content, due diligence and end-of-life.
What data does the EU Battery Passport require?
Battery identity and chemistry, performance and state-of-health data, carbon footprint, recycled content (cobalt, nickel, lithium, lead), supply-chain due diligence, and end-of-life information.
Is battery passport data per battery or per model?
Often per individual item — dynamic fields like state of health change over a battery's life, so item-level granularity is common.
Where does battery passport data come from?
From cell datasheets and supplier declarations, your own test data, a lifecycle carbon assessment, and your due-diligence policy — assembled and evidenced into the passport.