What is a Battery Digital Passport? The complete guide for 2027

On 18 February 2027, the rules of the EU battery market change. Every electric vehicle battery, every light means of transport battery and every industrial battery above 2 kWh placed on the market from that date must carry a battery digital passport: an electronic record, unique to that battery, reachable through a QR code on the product itself. A battery without one cannot legally be sold in the EU. This guide explains what the passport is, who needs one, what goes into it, who can read it, and how it works across the battery's entire life, including the part most explainers skip: end of life.

What is a battery digital passport?

A battery digital passport (often shortened to DPP or battery passport) is a structured electronic record attached to one individual battery. It is created by Regulation (EU) 2023/1542, the EU Battery Regulation, which entered into force on 17 August 2023, has applied since 18 February 2024 and replaced the 2006 Batteries Directive. Because it is a regulation rather than a directive, it applies directly in every member state with no national transposition: the same rules hold in Lisbon and in Helsinki.

The passport has three physical and digital components:

• A unique identifier assigned to the individual battery, which distinguishes this pack from every other pack of the same model.
• A QR code printed or engraved on the battery, which resolves to the passport when scanned.
• A data record covering the 90+ mandatory attributes listed in Annex XIII of the regulation, from chemistry and carbon footprint to dismantling instructions.

The most common misconception is that the passport is a birth certificate: a compliance document filled in once at the factory and then forgotten. The regulation says otherwise. State of health and usage data must be kept up to date throughout the battery's life, which makes the passport a live record that matures with the pack. It is also the first mandatory, sector-specific implementation of the EU's broader digital product passport concept: the Ecodesign for Sustainable Products Regulation will extend the model to other product groups, but batteries go first.

Which batteries need a passport, and who is responsible?

The passport obligation covers three battery categories placed on the EU market from 18 February 2027:

• EV batteries: traction batteries for electric cars, vans, trucks and buses.
• LMT batteries: batteries for light means of transport such as e-bikes and e-scooters.
• Industrial batteries above 2 kWh: stationary storage systems, forklift and other industrial traction batteries, telecom and backup power packs.

Portable consumer batteries and SLI batteries (starting, lighting, ignition) fall under other obligations of the regulation but do not need a passport.

The trigger is the moment of placing on the market: the first time the battery is made available for sale in the EU, which for imported products is the import moment. Two consequences follow. First, batteries already in vehicles or storage systems before 18 February 2027 need no retroactive passport. Second, the obligation sits with whoever places the battery on the market: the manufacturer for EU-made batteries, and the importer for batteries from non-EU makers. A Korean or American cell maker without an EU entity does not escape the rule; its importer inherits it.

One more actor is easy to overlook. An operator that takes a retired battery and repurposes it, for example an EV pack rebuilt into stationary storage, is placing a new product on the market. That repurposed battery needs its own passport, linked to the record of its first life.

What data does the passport hold?

Annex XIII of the regulation lists more than 90 mandatory data attributes. They fall into seven broad groups:

• Identity: manufacturer, battery category and model, unique identifier, place and date of manufacture, weight, rated capacity.
• Composition and chemistry: cell chemistry, critical raw materials present, hazardous substances above thresholds.
• Recycled content: the shares of recovered cobalt, lithium, nickel and lead used in active materials. These declarations are the paper trail for the binding quotas that start in 2031.
• Carbon footprint: the lifecycle carbon footprint of the battery. The carbon footprint declaration has been mandatory for EV batteries since 18 February 2025, so for that category the passport inherits work that should already be done.
• Performance and durability: rated capacity and power, round-trip efficiency, expected lifetime under reference conditions.
• State of health and usage: the parameters defined in Annex VII, including remaining capacity and capacity fade, plus usage data such as cycle history. These must be kept updatable through the battery's life.
• Dismantling and safety information: disassembly sequences, required tools, layout of components, safety measures and extinguishing agents, aimed at the people who will one day take the pack apart.

The split that matters in practice is static versus dynamic. Identity, chemistry and carbon footprint are written before the battery ships and rarely change. State of health and usage data change constantly, and the regulation requires them current, not archived. That single requirement is what separates the passport from every labelling scheme before it: a label describes the product as built, the passport describes the battery as it is today.

Who can read the passport?

Not everyone sees everything. The regulation defines tiered access:

• The public: anyone who scans the QR code sees general information such as the battery's identity, its carbon footprint and its recycled-content shares.
• Persons with a legitimate interest: recyclers, second-life operators, repairers and other professionals who handle the battery get the deeper layers: detailed composition, dismantling and safety data, and the state-of-health record they need to evaluate a pack.
• Market surveillance authorities and the European Commission: the full compliance view.

This tiering is how the regulation resolves an obvious tension. Manufacturers must share chemistry and disassembly data with the actors who genuinely need it, above all the recycler about to cut the pack open, without publishing their cell recipe to the world. The exact formulation stays gated; the facts required for safe handling and honest valuation flow to the people doing the handling and the valuing.

How does the passport work from factory gate to furnace?

The passport's real test is not its creation but its life. Followed end to end, the sequence looks like this:

• Creation. Before the battery is placed on the market, the responsible operator compiles the Annex XIII record: identity, chemistry, carbon footprint, recycled content, performance test results. The unique identifier is assigned and the QR code applied.
• Placing on the market. The passport must be live and accessible at the moment of sale or import. From 18 February 2027 this is the condition for market access, checked by market surveillance.
• First life. The battery management system already measures what the passport needs: capacity fade, cycle count, temperature extremes, fault events. Feeding those measurements into the passport keeps the state-of-health record current, as the regulation requires.
• Changes of ownership. The record is attached to the battery, not to its owner. When a vehicle is resold or a storage system changes hands, the history travels with the pack instead of evaporating, which is what used to happen at every transfer.
• Retirement. When the pack leaves first life, the reuse-or-recycle question is answered from the record rather than from guesswork. This is where the data pays: a battery with a verified, high-fidelity health history is worth about 30% more on the secondary market, and the first mass generation of EVs retires between 2027 and 2035.
• Second life. A repurposed pack is a new product with a new passport, linked to the original record, and its health data keeps accumulating through the second life.
• Recycling. For packs routed to recycling, the passport becomes an intake manifest: chemistry, state of charge, hazmat flags, disassembly sequence, expected material content. That documentation feeds targets already in law: recycling processes must reach 65% recycling efficiency by weight for lithium-based batteries by the end of 2025 and 70% by 2030, and recyclers must recover 50% of the lithium and 90% of the cobalt, copper, lead and nickel from waste batteries by the end of 2027, rising to 80% of the lithium and 95% of those metals by the end of 2031.
• Back into the loop. From 18 August 2031, new industrial and EV batteries must contain minimum recycled shares: 16% cobalt, 85% lead, 6% lithium and 6% nickel, rising in 2036 to 26% cobalt, 12% lithium and 15% nickel. Those shares are declared in the passport of the next battery, which is the point: the recovered material's paperwork closes the circle the regulation set out to build.

Read that way, the passport is less a certificate than a chain of custody. Each stage consumes the data the previous stage wrote, and no stage destroys information: even the pack that ends in the furnace arrives documented.

How do you implement a battery passport?

For a manufacturer or importer facing the 2027 deadline, implementation breaks into six workstreams:

• Run a gap analysis against Annex XIII. Map each of the 90+ attributes to a source system. Most companies find the data exists but is scattered across ERP records, test lab reports, supplier PDFs and BMS telemetry.
• Chase supplier data early. Carbon footprint inputs and materials declarations sit deep in the supply chain, and suppliers answer slowly. The related supply-chain due diligence obligations for cobalt, lithium, nickel and natural graphite, originally set for August 2025 and postponed to 2027, draw on the same supplier relationships, so one outreach effort can serve both.
• Serialise at unit level. Every battery needs its own identifier and QR code, wired into production so the physical marking and the digital record can never diverge.
• Build the dynamic pipeline. Static data can be entered once; state of health cannot. Plan the connection from the BMS or telematics platform to the passport from the start, because retrofitting it later is the expensive path.
• Design the access tiers. Decide which attributes are public, which open to legitimate-interest actors and which are restricted, and enforce that in the passport system rather than in policy documents.
• Prepare for verification. Batteries in these categories go through conformity assessment with notified bodies, and auditors will ask how each passport value was produced. Keeping evidence attached to data points from day one turns the audit from an archaeology project into a review.

On timing: teams that have done this report that supplier data collection, not software, is the long pole. Starting in 2026 for a February 2027 deadline is realistic; starting in January 2027 is not.

Frequently asked questions

When does the battery passport become mandatory? On 18 February 2027, for EV batteries, LMT batteries and industrial batteries above 2 kWh placed on the EU market from that date. The regulation itself has applied since 18 February 2024; the passport is one of its staged obligations.

Do batteries already in service need a passport? No. The obligation attaches at the moment of placing on the market, so packs sold before 18 February 2027 are not retroactively covered. A retired pack that is repurposed and placed on the market again after that date does need one.

Is the passport per model or per unit? Per unit. Some attributes, such as chemistry or carbon footprint, are naturally shared across a model, but the identifier is unique to the individual battery and the state-of-health record only makes sense at unit level. Two packs of the same model diverge from their first charge cycle onward.

Can competitors see my cell chemistry through the passport? No. Public access covers general information such as identity, carbon footprint and recycled content. Detailed composition and dismantling data are reserved for persons with a legitimate interest, such as recyclers and repairers, and for authorities.

What happens if a battery has no passport after the deadline? It cannot be placed on the EU market. Market surveillance authorities can block non-compliant batteries at import or order them withdrawn, and member states set penalties for infringements. For a non-EU manufacturer, the exposure lands on the importer.

Is the battery passport the same as the EU Digital Product Passport? The battery passport is the first mandatory, sector-specific version of the DPP concept. The Ecodesign for Sustainable Products Regulation extends the same model to other product groups over the coming years, which makes the battery rollout the template the rest of industry will follow.

Conclusion: a ledger that outlives the factory gate

The battery digital passport is best understood as a per-unit chain of custody: written at manufacture, kept alive through use, and consumed at end of life, where it decides whether a pack earns a second life or arrives at the recycler as a documented feedstock rather than an anonymous hazard. Companies that treat it as a one-time compliance form will meet the letter of the 2027 deadline and miss the value. The record is the asset.

Passoria builds the passport this way by design: an Annex XIII-ready passport engine, a BMS-to-passport bridge for live state of health, and a scan-to-manifest intake view for recyclers. Our pilot program is open to a limited number of manufacturers, resellers and recyclers ahead of the 2027 deadline.