What is the Digital Battery Passport and how to prepare before February 2027

The digital battery passport is the most discussed and least understood part of Regulation (EU) 2023/1542. From 18 February 2027, batteries in scope may not be placed on the EU market without one. Most of the anxiety about it comes from a misunderstanding of who is in scope, so start there.

What the passport actually is

Under Article 77, the battery passport is a structured electronic record, unique to each individual battery, accessible through the QR code carried on the battery, and hosted in a decentralised way — the data stays with the responsible economic operator, and the passport is reachable through a unique identifier registered in an EU system.

It is not a PDF. It is not a product page. It is a machine-readable record, with defined data fields and tiered access: some information is public, some is available to persons with a legitimate interest such as repairers, remanufacturers and recyclers, and some is available to notified bodies and market surveillance authorities.

Each battery has its own passport. Not each model — each unit. That is the requirement most likely to change how a manufacturer's production records work, because it implies serial-level identity and serial-level data capture.

Who needs one — and who does not

This is the part worth getting right before you plan any work.

A full battery passport is required for: LMT batteries, industrial batteries with a capacity greater than 2 kWh, and electric vehicle batteries.

A full battery passport is not required for: portable batteries and SLI batteries.

If you sell earbuds, kitchen gadgets, toys, power tools with sealed portable packs, power banks, or smart-home sensors, the cells are portable batteries and there is no passport obligation. What you do have, from the same date, is a QR code giving access to the label information, the declaration of conformity, the removal and replacement instructions and the separate-collection information.

That distinction — QR code for all batteries, passport for LMT, industrial >2 kWh and EV only — is the single most common confusion in the market, and vendors selling "battery passport platforms" to consumer electronics brands are frequently selling a solution to an obligation those brands do not have.

Where it gets less obvious: e-bike and e-scooter packs are LMT batteries and do need a passport. Large stationary storage, telecom backup, and heavy machinery packs over 2 kWh are industrial and do need one. If any part of your range crosses into those categories, treat February 2027 as a hard deadline with real data work behind it.

What data the passport contains

The passport pulls together information that today lives in half a dozen unconnected places. Broadly, it carries:

Identification. Manufacturer identity, manufacturing plant, date of manufacture, battery category, model, and the unique identifier of the individual battery.

Composition. Material composition, including the critical raw materials present, and the chemistry. This is where supplier disclosure becomes the constraint, because a cell maker who has never had to declare composition at this granularity will not have it ready.

Carbon footprint. The carbon footprint declaration for the battery, calculated by the methodology set out in the implementing acts, with the footprint performance class where applicable. This is a life-cycle calculation, not an estimate, and it needs primary data from the cell supply chain.

Recycled content. The share of cobalt, lithium, nickel and lead recovered from waste and present in the active materials, with the evidence behind the figure.

Performance and durability. Rated capacity, capacity fade, internal resistance, power capability, expected lifetime, and the temperature range of operation, tested against defined parameters.

Due diligence. The supply chain due diligence policy and reporting required under Chapter VII, covering the sourcing risks associated with cobalt, natural graphite, lithium and nickel.

State of health and dynamic data. For EV and industrial batteries, in-use parameters such as state of certified energy, remaining capacity and round-trip efficiency, updated over the life of the battery — which means the passport is not a document you file once, it is a record you keep current.

End of life. Information for dismantlers and recyclers: safe removal, disassembly, cell chemistry, presence of hazardous substances.

Why this is a data problem, not a software problem

Every organisation that has attempted this has reached the same conclusion: the passport itself is a publishing exercise, and everything hard about it is upstream.

Composition and recycled content live with your cell supplier, often two tiers away from you. Getting a defensible figure requires contractual data clauses, not an email. Suppliers who have never been asked will need months, and some will refuse until a customer of scale insists.

Carbon footprint needs primary data. Cathode active material production dominates the footprint, and generic database values will not satisfy a declaration tied to a defined methodology. The calculation depends on where the cell was made and on which electricity mix supplied the plant.

Serial-level identity has to exist in production. If your records are per-batch, a per-unit passport cannot be generated from them. Fixing identifier granularity is a manufacturing-systems change with a long lead time.

Persistence outlives your vendor cycle. The passport has to remain accessible for a defined period after the battery is placed on the market. Whoever hosts it needs to exist, and your unique identifiers need to survive a platform migration.

Versioning matters. When you change a supplier or a cell specification, units already sold keep their original passport. Overwriting a shared record is not acceptable; you need version history bound to the identifier.

The EU battery registry and registration

Alongside the passport, the regulation builds registration infrastructure. National producer registers under Article 55 have been operating through 2026 — producers must be registered in each Member State where they make batteries available, and cannot make batteries available without that registration. Germany's register under the BattDG is the one marketplaces check most visibly, and Amazon requires the registration number for German offers.

Separately, the passport system relies on a central registry of unique identifiers: the passport is decentralised, but the identifiers and the pointer to each record are registered in an EU system so that authorities and legitimate users can resolve a code to a record. Practically, for a manufacturer of in-scope batteries, that means the identifier scheme is not something you invent freely — it follows the format specified in the implementing acts, and your codes have to be registered before the battery is placed on the market.

Do not conflate the two. Producer registration is about extended producer responsibility and applies to portable batteries too. The passport registry is about resolving passport identifiers and applies only to the passport categories.

How to prepare, by category

If your batteries are portable or SLI only: you have no passport obligation. Your February 2027 work is the QR code and what it resolves to, the Annex VI markings, and the Article 11 removability requirement. Build a stable page per model serving the label data, the declaration of conformity, removal instructions and collection information, in the languages of your markets. Budget weeks, not quarters.

If any battery is LMT, industrial over 2 kWh, or EV: start now, and start with data rather than software.

1. Pick one representative battery and try to fill the passport. The exercise takes a week and produces an exact gap list. Most manufacturers find they can supply identification and performance data, partial composition, no substantiated recycled content and no primary-data carbon footprint.
2. Put data clauses into supplier agreements. Composition by weight, critical raw materials, recycled content with evidence, plant location and energy mix, and a duty to notify changes. Retrofitting this across a supplier base takes a year.
3. Fix identifiers. Decide how an individual battery is identified, make it unique, make it durable on the physical product, and make sure production systems record it against the data captured at build time.
4. Assign an owner. The passport spans sourcing, sustainability, engineering, quality, legal and IT. Left unowned, it stalls in exactly the way early Digital Product Passport programmes stalled.
5. Design for tiered access from the start. Public, legitimate-interest and authority views of the same record — retrofitting access control onto a public page is harder than building it in.
6. Track the implementing acts. The detailed data model, the identifier format and the carbon footprint methodology sit in delegated and implementing acts that continued to land through 2026. Build the data, stay loose on the format.

The wider signal

The battery passport is the first full-scale application of a model the EU intends to extend to most product categories through the Ecodesign for Sustainable Products Regulation — textiles, furniture, electronics, steel and more. Organisations that build clean, supplier-sourced, unit-level product data for batteries in 2026 are building exactly the capability the next wave requires. Those that outsource it to a passport tool without fixing the underlying data will do the work twice.

Educational information only, not legal advice. Data fields, identifier formats and methodologies depend on implementing acts — confirm your obligations with a qualified advisor.