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We Looked Inside a Real Battery Passport. Here Is What We Found and What Is Still Missing.
The Battery Passport becomes mandatory in February 2027. We had access to a Digital Product Passport for a 48V EV battery pack that gave us a close look at how this system actually works in practice. For confidentiality reasons we cannot share it directly, but we can tell you what it contains, what surprised us, and the three points where what we saw does not yet fully align with what EU Regulation 2023/1542 requires.
For background on the DPP framework and the broader ESPR timeline, you can read our introduction to the EU Digital Product Passport.
What a Battery Passport actually looks like
The passport we consulted was structured around five sections, each addressing a distinct category of information. Here is what each one contains.
Product identification
The first section works as the cover of the dossier. It contains the product name, brand, a structured unique DPP identifier, the batch reference, and the product category with its target market. It also includes the basic technical identification data: nominal capacity, nominal voltage, operating temperature range, expected life cycles, applicable standards, and sales channels. Access to the passport is via a QR code printed on the battery pack label, linked to a DPP portal.
This is the section that any actor in the chain, from the importer to the market surveillance authority, consults first to verify that the product is what it claims to be. The level of detail is significant: the passport we saw specified the battery as a lithium-ion pack for EV and HEV automotive applications, targeting the European OEM and light electrified vehicle retrofit market, with a nominal capacity of 9.6 kWh (48V, 200Ah) and an expected cycle life above 3,000 cycles at 80% depth of discharge.
Product composition
This section goes into the architecture of the pack. It describes the high-level composition: prismatic lithium-ion NMC cells, aluminium module structures, an integrated Battery Management System with voltage, current and temperature sensors, protection systems including fuses, contactors and galvanic isolation, and an external enclosure with IP67 protection rating.
Alongside the structural description, the section presents performance data: usable capacity, round-trip efficiency above 94% in nominal conditions, typical range contribution of over 50 km on a light electric vehicle in mixed urban cycle, and estimated capacity loss below 20% after 3,000 cycles under normal use. A dedicated subsection covers safety by design: protection against overcharge, overdischarge and short circuit, automatic isolation in case of critical fault, and thermal design to limit thermal runaway risk.
This section is oriented primarily toward economic operators further down the value chain: system integrators, specialised workshops, repurposing operators. The level of technical detail it contains determines whether someone receiving or servicing the battery can work with it safely and effectively.
Environmental impact
This is the section with the heaviest data burden and the one that requires the most preparation work. It describes the production process in its main phases: cell production at specialised suppliers, module assembly and BMS integration at a European plant, final pack assembly with electrical and thermal testing, packaging and distribution to vehicle manufacturers and integration centres.
It includes plant-level ESG management data: energy consumption monitoring per kWh of capacity produced, progressive adoption of renewable energy at production sites, waste reduction plans, and safety training programmes for high-voltage operators.
On the product environmental indicators side, the passport presents an estimated carbon footprint per pack, total water consumption across cell production and pack assembly, total energy used in production and assembly, and a theoretical recyclable content above 70% by weight for metals and active materials.
The COâ‚‚ distribution across lifecycle phases is presented visually: cell production accounts for 35%, pack assembly for 20%, logistics for 10%, vehicle use for 25%, and end-of-life and recycling for 10%. As we will discuss in the gaps section, the passport explicitly flags these as indicative values, not based on a real lifecycle assessment. That distinction matters considerably for regulatory compliance.
Use, maintenance and end of life
This section is directed at whoever uses or manages the product: vehicle owner, workshop, fleet operator. It contains usage guidelines (recommended state of charge range between 20% and 80% to maximise useful life, storage conditions, temperature limits), safety warnings (do not open or pierce the pack, procedure in case of severe impact, signs of anomaly requiring authorised service centre intervention, OEM procedures in case of vehicle accident), and maintenance and monitoring instructions (periodic State of Health checks via BMS diagnostics, OTA software updates for energy management logic, periodic verification of mechanical fixings and high-voltage electrical connections).
The end-of-life and second-life section is one of the most regulatorily relevant parts of the entire passport.
It describes the residual capacity threshold below which the pack is evaluated for second-life use in low-power stationary storage systems, the process of sending the pack to specialised recovery centres for lithium, nickel and cobalt, and end-of-life management in compliance with WEEE regulations and local battery recycling rules. This information is not generic: it is specific to the chemistry and architecture of this particular pack, which is exactly what recyclers and repurposing operators need to work efficiently and safely.
The Story section
The last section of the passport is not a technical form. It is a narrative text written by the manufacturer. The title translates roughly as “From cell to vehicle: a DPP to bring transparency to batteries.” It explains who the company is, the complexity of its global supply chain with cell suppliers in Asia and assembly lines in Europe, why it created the DPP for this product, and what role it envisions the passport playing in the future, connected to real-time monitoring systems, fleet management platforms and critical material traceability solutions.
None of this is a regulatory requirement. It is a communication choice. Which brings us to one of the most underappreciated dimensions of the Digital Product Passport.
The Story section: where compliance becomes a marketing channel
The passport we consulted demonstrates something that no regulation specifies: the manufacturer has complete control over the public tier of the DPP. Anyone who scans the QR code on the product, whether a consumer, a workshop technician, a recycling operator or a potential second-life buyer, arrives at a page whose content the manufacturer defines.
Within the limits of what the regulation allows in the public tier, that page can carry far more than dry technical data. Origin story, materials sourcing narrative, sustainability credentials, ESG commitments, repair and care guidance, brand values: all of this can be part of what the user sees when they scan the product.
This is a marketing channel built into the product itself, one that remains active for the entire lifetime of the battery. A touchpoint that does not depend on search engines, social media algorithms or advertising spend. As we noted in our introduction to the EU Digital Product Passport, this dimension is one of the least discussed opportunities of the system. The passport we consulted shows that some manufacturers are already using it intentionally.
Three gaps between what we saw and what the regulation requires
Gap 1: Critical raw materials traceability is absent. Articles 8 and 77 of Battery Regulation 2023/1542 require declaring the percentage of recycled content of cobalt, lithium, nickel and graphite in the cells, as well as their geographic origin. The passport we reviewed describes the chemistry of the pack correctly and in detail. It does not include this traceability of critical materials. Obtaining it requires going back to cell suppliers and, in many cases, to second-tier raw material suppliers. For manufacturers with global supply chains, this is one of the most operationally demanding data collection challenges in the entire regulation.
Gap 2: The carbon footprint needs a certified methodology, not an estimate. The passport presents a COâ‚‚ distribution across lifecycle phases, with the data explicitly labelled as indicative values not based on a real lifecycle assessment. For a demo, this is honest and appropriate.
For regulatory compliance, the carbon footprint declaration must be calculated according to the specific methodology defined in the delegated acts of the Battery Regulation.
The distance between an illustrative chart and a certifiable, auditable figure can be measured in months of work with teams specialised in lifecycle analysis and primary data collection from the supply chain.
Gap 3: The State of Health is treated as static, but the regulation requires it to be dynamic. The SoH appears in the maintenance section as a reference parameter. The Battery Regulation requires the Battery Passport to include updatable data reflecting the actual state of health of the battery throughout its operational life. This transforms the DPP from a document prepared once before market placement into a live system that receives updates from the BMS or from vehicle diagnostic systems over time. It is one of the most significant technical implementation challenges of the entire Battery Passport requirement, and one that directly affects the data integration architecture a manufacturer needs to put in place.
What this means for manufacturers preparing for 2027
The three gaps we identified do not reflect a poorly built passport. They reflect the distance that still exists between a structurally correct demonstration and full regulatory compliance. The sections are the right ones, the information architecture is sound, and the Story section shows that some manufacturers are already thinking about the DPP as something beyond a compliance exercise.
The data that is missing, material traceability, certified carbon footprint, and dynamic lifecycle data, is also the data that takes the longest to generate. It requires supply chain collaboration, system integration, and in some cases redesigning how product information is collected and stored internally. February 2027 is closer than most manufacturers currently appreciate.
At GetReady Compliance, we can offer technology-based solutions to help manufacturers navigate this transition. Tell us about your project.
Category: DPP