Recycled content is one of the two field groups that reliably stalls a battery passport — the other being carbon footprint. The requirement looks simple from the outside: declare how much of the cobalt, lithium, lead and nickel in the battery is recycled. In practice it decomposes into thirteen separate attributes, the numbers originate several tiers upstream, and they have to be evidenced rather than asserted.
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The battery passport does not carry a single "recycled content" percentage. It carries a total share plus a breakdown, and the breakdown is what causes the work. Four metals are named in the Regulation — cobalt, lithium, lead and nickel — and the data model splits the declaration so that pre-consumer and post-consumer material can be distinguished, because they are not equivalent for the purposes the figures serve.
In our implementation of the profile this group resolves to thirteen distinct attributes. You can see the exact field keys, datatypes and access tiers in the full field list; the point for planning is that a supplier answering "about 12% recycled" has not answered the question.
A pack assembler does not smelt cobalt. Neither, usually, does the cell producer. The recycled share of a metal is determined at the refining and cathode-production stage, which sits two or three tiers above the company that places the battery on the EU market — and that company is the one legally responsible for the passport being accurate.
That produces the characteristic failure mode of this group: the obligated company asks its cell supplier, the cell supplier asks the cathode maker, the cathode maker asks the refiner, and each hop adds weeks. Starting this chain in the fourth quarter of 2026 leaves room for it to be slow. Starting it in January 2027 does not.
The correctly cynical read: whoever asks first gets answered first, because the upstream supplier is answering the same question for every customer and will work through the queue.
A recycled-content figure that cannot be traced is a liability rather than a compliance artefact. If a market surveillance authority or a customer's auditor asks where 16% came from, "our supplier told us" is a weak answer and an estimate is a worse one — an inaccurate passport is itself a compliance failure, and it is attributable to the operator who published it, not the supplier who guessed.
Practically this means capturing, alongside the number: who issued it, on what date, for which cell or material batch, and under what methodology. Store the underlying declaration as a document, not just the percentage. When the figure is later challenged — and for a public-facing field it will be — the document is the whole defence.
The most expensive mistake in this group is treating the figures as a property of the product rather than of the supply. Recycled shares describe the material that went into a specific production run. Change cell supplier, or let your existing supplier change their cathode source, and the declared shares are no longer true for batteries built after that change.
So the group needs a refresh trigger, not a one-off collection exercise:
Take the 2-minute readiness check, watch the 10-minute interactive walkthrough, or download the full 2026 compliance guide. No account needed.