The EU Battery Passport: a Practical Guide for Buyers and Suppliers

European Battery Passport: A Practical Guide for Buyers and Suppliers Ahead of February 2027

Estimated reading time: approximately 17 minutes

In the energy sector, compliance topics often have a familiar feel. CE marking, RoHS, REACH, WEEE: each of these requirements went through an adjustment period before eventually becoming a routine administrative formality.

It may be tempting to put the Digital Product Passport in the same category — one more acronym, one more form, one more box to tick before shipment. That would be a mistake. Not because the passport is particularly complex, but because, unlike many compliance deadlines, this one will not simply go away. Regulation (EU) 2023/1542 sets 18 February 2027 as the date from which the battery passport becomes mandatory for electric vehicle batteries, light means of transport batteries, and industrial batteries above 2 kWh placed on the European Union market.

And yet, most of the companies concerned — manufacturers, who must produce the passport, as well as buyers, who must ensure their suppliers are capable of doing so — still treat the issue as a distant problem. This article is for both.

What the battery passport actually requires

It is tempting, but inaccurate, to view this regulation as simply another certificate to add to an already substantial compliance file. In reality, it represents a fundamental change in the nature of compliance evidence: instead of a folder of PDFs supplied by a vendor on request, the battery passport is a digital record linked to a unique identifier carried by the battery itself and directly accessible to a regulator, recycler, or buyer.

The battery passport: key dates

August 2023 — Regulation (EU) 2023/1542 enters into force.

February 2025 — Carbon footprint declarations become mandatory for electric vehicle batteries, light means of transport batteries, and industrial batteries above 2 kWh — a requirement that is already applicable today.

February 2026 — Introduction of performance and durability classes, from A to E.

18 February 2027 — The battery passport becomes mandatory. Without it, a battery cannot legally be placed on the EU market.

February 2028 — Maximum carbon footprint thresholds begin to apply.

2031 / 2036 — Progressive introduction of minimum recycled-content thresholds for cobalt, lithium, nickel, and lead.

Two points in this timeline deserve particular attention.

First, carbon footprint declarations are not a 2027 issue: they have been mandatory since February 2025, which means that any supplier that still does not have them is already behind on a requirement currently in force.

Second, once the passport itself becomes mandatory in February 2027, it will not fit into a single form. The European Commission’s technical guidance, published in August 2026, identifies 71 distinct data points, covering identification, physical and chemical properties, performance, technical documentation, and dynamic operational data such as state of health. That level of detail cannot be assembled at the last minute — neither by suppliers nor by buyers.

A subject that extends far beyond batteries

Batteries are the first product category required to comply with a mandatory digital passport, but they will not be the last. The Battery Regulation forms part of a broader framework, the Ecodesign for Sustainable Products Regulation (ESPR), which will ultimately introduce Digital Product Passports for entire families of industrial products.

Photovoltaics and stationary energy storage, as product categories in their own right, currently have neither a delegated act nor a confirmed timetable; the European Commission still lists them among the categories under consideration, alongside paints and detergents. One thing, however, is beyond doubt: the direction of travel. The Commission aims to bring the majority of manufactured products sold in the EU under some form of digital passport by the end of the decade. Batteries are simply the first in line — they are not an isolated case.

Whatever product category is ultimately concerned, the passport always comes back to the same six questions — the questions naturally asked by anyone who did not manufacture the product: a buyer, repairer, or recycler.

Where does it come from?

What is it made of?

What is its environmental impact, from production through use?

What lifespan was it designed for?

How can it be repaired?

And how can it be dismantled at end of life?

The regulation groups these answers into six categories of mandatory data, and each future delegated act will add sector-specific fields without altering this common framework.

• Identification is the product’s identity card: manufacturer, model, country of origin, batch number.

• Composition describes what the product actually contains — materials, any hazardous substances, and the proportion of recycled material.

• Environmental footprint is where life-cycle assessment comes into play, summarised by a carbon footprint figure and, in sectors where the Commission has defined one, a broader PEF (Product Environmental Footprint) score.

• Durability covers expected service life and resistance to use — for a battery, this translates directly into the number of charge cycles it is expected to withstand.

• Repairability concerns the actual availability of spare parts, ease of disassembly, and a repairability index where one exists for the relevant product category.

• End of life, finally, covers product recyclability, available recovery and recycling routes, and the information a collector or recycler needs to process the product correctly.

A supplier that has seriously addressed these six dimensions for a battery has already completed much of the work that the next delegated act may require for another product.

This is precisely why the work undertaken for the battery passport is not a sunk cost specific to batteries, but a reusable investment: supply-chain traceability, an operational life-cycle assessment process, and procurement due diligence capable of withstanding detailed scrutiny. This infrastructure will be useful every time a new product category receives its own delegated act.

One detail catches many companies off guard: there is no company-size threshold. A small battery-pack assembler is subject to the same documentation requirement as a multinational cell manufacturer once its product falls within the scope of a delegated act.

Who actually bears the obligation

Another aspect of the regulation causes more confusion than almost any technical requirement: the obligation falls on the party placing the product on the EU market, not necessarily on the party that manufactured its components.

A company that purchases cells from a supplier outside the EU and assembles them into a finished battery pack is responsible for producing the passport for that pack — not the cell manufacturer, regardless of any assurances contained in the purchase order.

A distributor importing a finished energy storage system from outside the EU bears the same obligation as the importer, even if every component was manufactured and tested elsewhere. There is nothing unique to batteries here: it follows the same logic as CE marking and the rest of EU product law, and that responsibility does not stop at the factory gate.

This is particularly important for buyers that perform their own assembly or sell products under their own brand. A company that combines cells, modules, or subsystems from multiple suppliers and ships a finished product under its own brand bears the passport obligation itself, using data that must be provided by its suppliers.

Chasing that data at the last minute from suppliers that were never previously asked to provide it puts a company in a far more difficult position than a straightforward reseller of a finished product that already has its passport. This is one reason why Audit 9.0 asks suppliers from the outset to specify their role in the value chain and identify their legal representative in the EU, rather than addressing those questions after the fact.

The supplier blind spot

Ask most battery or energy storage system manufacturers whether they comply with the Battery Regulation and, today, the honest answer will usually be: “in principle, yes.”

Then ask them to produce the documents proving it within a short timeframe, and the answer changes. It is in this gap — between compliance as a stated position and compliance as an assembled body of evidence — that most suppliers will lose time between now and February 2027.

Part of the confusion stems from the fact that the passport is often presented primarily as a software decision: which platform, which provider, which QR-code standard. That part moves quickly — selecting and configuring a passport hosting solution can be done within a matter of weeks. But it is also almost secondary. The platform is merely the container; the life-cycle assessment, composition file, and due diligence report are the content, and producing that content is what actually takes months. A supplier comparing DPP software vendors while the collection of underlying data has not yet begun is solving the easy six-week part of a much longer problem.

A carbon footprint study cannot be produced in an afternoon by the quality team. A robust life-cycle assessment generally requires six to eighteen months and a meaningful budget — which means a supplier that has not yet started one has little chance of having it ready on time, regardless of its willingness to comply.

A chemical composition and hazardous substances declaration must exist at the level of the specific battery model, not merely for the factory as a whole. Recycled-content and raw-material origin data — including the proportion of cobalt, lithium, and nickel sourced from recycled material — must be traceable through a multi-tier supply chain that most manufacturers do not control beyond their first-tier cell supplier. This traceability is generally the slowest part of the process, regardless of the budget or consultant involved, because it depends on suppliers that may not be accustomed to providing this type of information.

A due diligence report on responsible sourcing is a governance document that requires a genuine internal process — not a spreadsheet completed the week before an audit. The battery management system must also be capable of recording and exporting state-of-health data in a format that can be used by the passport: that is a firmware and data-architecture issue, not an administrative one.

None of this can be put in place during the final few weeks. The suppliers that will genuinely be ready in February 2027 are those that quietly began this foundational work in 2026, while their competitors continued to treat the passport as just another line item in their regulatory watch.

There is, however, some good news. The life-cycle assessment commissioned by a supplier for the passport is not a single-use document: it relies on the same underlying data used for broader corporate carbon-accounting obligations, as well as for any ecodesign initiatives already underway elsewhere in the organisation.

Suppliers that had previously postponed both topics because neither seemed urgent can use the passport deadline as an opportunity to begin work they would ultimately have had to undertake anyway. One dataset, multiple obligations addressed — rather than another standalone compliance cost layered on top of the rest.

WHAT SUPPLIERS NEED TO KNOW

Choosing the software is the easy part. The life-cycle assessment, composition file, and due diligence report are what actually take time — and raw-material traceability throughout the supply chain is generally the slowest step, regardless of budget. Start this work now: not only because the deadline is approaching, but because the same data will be required again for other obligations, whether or not the passport was what initially prompted you to collect it.

The buyer blind spot

After 18 February 2027, a battery that cannot present a valid passport is a battery that cannot legally enter the EU market — regardless of its price.

Buyers face the opposite problem — and one that is just as real. A supply agreement signed in the second half of 2026 will, in most cases, still be in force in 2027, 2028, and beyond. In other words, a purchasing decision made today solely on the basis of price or lead times may hit a wall as soon as the requirement comes into force.

The regulation contains no grandfathering provision for existing contracts. A supplier unable to provide a passport after 18 February 2027 is a supplier whose product can no longer legally be placed on the EU market — regardless of the terms written into the purchase order. This is not an infringement that can simply be settled with a fine before business resumes, as may be the case with a late filing under an existing scheme: it is a market-access issue. And a product stopped at the border represents a fundamentally different level of risk from a penalty that a legal department can simply provision for.

Most procurement teams know how to ask suppliers about readiness during a tender. Verifying the answer is another skill entirely — and one that most purchasing organisations in the energy sector do not have in-house: confirming that a claimed life-cycle assessment actually exists, that a due diligence report genuinely covers what the supplier says it covers, or that a battery management system can truly export the data required by the passport.

Chasing this evidence supplier by supplier across a panel that may include dozens of candidates is exactly the kind of task that does not scale. The result, in most organisations today, is one of two possible failure scenarios. Either the buyer takes the supplier’s declared readiness at face value and discovers the problem too late, in 2027. Or the buyer attempts to conduct the due diligence internally and loses months repeating the process supplier by supplier.

WHAT BUYERS NEED TO KNOW

A signed contract does not exempt a supplier from the deadline, and a supplier’s word is not the same as evidence. Verify passport readiness before signing, not afterwards: the difference is between asking the question once during sourcing in late 2026 and having a shipment stopped at an EU border in 2027 under a contract that is already in force.

Where Audit 9.0 fits in

BuyStep built Supplier Audit 9.0 around a simple observation, summarised in its own methodology — Requirements, Evidence, Decision: the two blind spots described above are actually one and the same problem viewed from opposite ends of the same transaction.

A supplier that has genuinely completed the underlying compliance work has already produced everything a buyer needs. What was missing was a structured place to submit that information once and for all — and a way for the buyer to review it without restarting the entire due diligence process from scratch.

Audit 9.0 is free for buyers and is based on more than 200 declarative criteria covering the supplier’s legal status, technical capabilities, quality systems, and regulatory compliance.

Its compliance section is precisely where battery-passport readiness sits — not in the form of the 71 dynamic data points associated with the record for each individual battery, which vary from unit to unit, but in the form of the underlying documentary readiness required to produce them.

Does the carbon footprint study exist, and is it available?

Is the chemical composition and hazardous substances declaration accessible?

Can the origin of raw materials be traced, with actual recycled-content figures?

Is there a genuine due diligence process for sourcing cobalt, lithium, and nickel?

Can the battery management system export state-of-health data?

Is a passport data serialisation and hosting solution in place?

Have disassembly and end-of-life instructions been prepared?

Is the declaration of conformity available?

Is the producer registered under Extended Producer Responsibility requirements where applicable?

The supplier answers these questions once and uploads the evidence once — and that snapshot of its readiness becomes visible to every buyer reviewing it, instead of being renegotiated from scratch with every new tender.

For buyers, the passport question therefore moves from “trust me” to “see for yourself” — before a contract is signed, rather than after a shipment is turned away at an EU border in March 2027.

What to do before February 2027

Setting priorities requires little guesswork here. Suppliers that have not yet started a life-cycle assessment should make it their number-one priority, given how long the process actually takes, while simultaneously — not sequentially — documenting raw-material traceability and due diligence processes.

Buyers, for their part, should assess the passport readiness of both existing suppliers and new candidates before making any contractual commitment that will extend beyond February 2027. The earlier the question is raised, the more time the supplier has to address it properly rather than improvise a response.

BuyStep is built on a simple conviction: purchasing decisions in the energy sector should be based on evidence, not commercial pressure or blind trust — which is also why the platform charges no commission to either side of the transactions it helps inform.

In that sense, the battery passport is exactly the kind of problem BuyStep is designed to solve: a real deadline, a genuine information gap, and two parties that both have an interest in closing that gap before the deadline rather than after it.

Source smarter. Decide better.