Battery Passport — EU Digital Record Mandated by Battery Regulation
The Battery Passport is a digital record mandated by the EU Battery Regulation (2023/1542) for electric vehicle (EV) batteries, light means of transport (LMT) batteries, and rechargeable industrial batteries with a capacity of 2 kWh or more. It is the first large-scale implementation of the EU’s broader Digital Product Passport concept, and represents a fundamental shift in how battery product information is managed, shared, and verified across the supply chain.
Each physical battery must carry a QR code or other data carrier linking to its Battery Passport — a structured digital record containing lifecycle, sustainability, performance, and supply chain data. The Battery Passport is not a document submitted to an authority — it is a live, web-accessible data object associated with each battery unit or batch, accessible to different stakeholders (regulators, recyclers, consumers, supply chain partners) with different levels of data access.
Key Facts
| Detail | Information |
|---|---|
| Legal basis | Regulation (EU) 2023/1542, Article 77 and Annex XIII |
| Applicable to | EV batteries, LMT batteries (e-bikes, e-scooters), rechargeable industrial batteries ≥ 2 kWh |
| Not required for | Portable batteries (AA, smartphone, laptop etc.), SLI batteries |
| Earliest obligation | 18 February 2025 (EV batteries) |
| LMT batteries | 18 February 2026 |
| Industrial batteries ≥ 2 kWh | 18 August 2027 |
| Data carrier | QR code or other machine-readable medium, permanently affixed to battery |
| Access platform | EU Common Data Service (to be designated by European Commission) |
| Unique identifier | Each battery must have a unique identifier (UID) assigned at manufacturing |
What the Battery Passport Must Contain
The Battery Passport aggregates data across multiple dimensions of the battery’s lifecycle. Access levels vary — some data is publicly accessible, some is restricted to authorised stakeholders only:
General Information (Publicly Accessible)
- Battery model identifier, batch/serial number, manufacturing date and location
- Battery category (EV, LMT, industrial)
- Electrochemical chemistry (e.g., NMC, LFP, NCA, solid-state)
- Manufacturer name and contact information
- EU Declaration of Conformity reference
- CE marking information
Carbon Footprint Information (Publicly Accessible)
- Total carbon footprint of the battery, expressed in kg CO₂ equivalent per kWh of energy capacity
- Carbon footprint performance class (A–E, relative to market average)
- Carbon footprint lifecycle stages breakdown: material extraction, pre-processing, cell manufacturing, battery assembly, and transport
- Third-party verification status of the carbon footprint calculation
Material Composition (Publicly Accessible)
- Chemistry of the active cathode and anode materials
- Electrolyte type
- Declared recycled content percentages for critical raw materials (cobalt, lithium, nickel, natural graphite, lead)
- Hazardous substance information
Supply Chain Due Diligence (Restricted to Authorised Stakeholders)
- Country of origin for critical raw materials
- Social and environmental risk assessment results
- Third-party audit findings related to supply chain due diligence
Electrochemical Performance and Durability (Publicly Accessible)
- Original capacity (kWh or Ah)
- State of Health (SoH) — current capacity relative to original, updated over the battery’s life
- State of Charge (SoC)
- Number of charge-discharge cycles completed
- Internal resistance
- Expected lifetime and end-of-life date estimate
State of Battery (Updated Throughout Life — Authorised Access)
- Real-time or periodic State of Health updates
- Temperature and charge history (where applicable)
- Event logs: deep discharge events, overtemperature events
End-of-Life and Repurposing Information (Authorised Stakeholders)
- Dismantling instructions for safe battery removal
- Hazardous substance locations and handling instructions
- Recycling process recommendations
- Economic operator for end-of-life take-back
The Unique Battery Identifier
Each battery must be assigned a unique identifier (UID) that:
- Is permanently affixed to or engraved on the battery and its packaging
- Is linked to the Battery Passport data record
- Enables traceability from manufacturing through end-of-life
- Follows the format defined by the European Commission (based on ISO/IEC standards)
The UID is what connects the physical battery to its digital twin in the Battery Passport system.
Data Access Levels
The Battery Passport defines tiered access to protect commercially sensitive information while ensuring appropriate transparency:
| Stakeholder | Access Level | Example Data |
|---|---|---|
| General public | Open access | Carbon footprint class, chemistry, capacity, recycled content declaration |
| Consumers | Open access | Performance data, safety information, end-of-life instructions |
| Market surveillance authorities | Full access | All data including supply chain, internal test results |
| Recyclers and repurposers | Authorised access | Dismantling instructions, State of Health, hazardous substance locations |
| Notified bodies and auditors | Full access | All data for conformity assessment purposes |
| Supply chain partners | Contractual access | Carbon footprint breakdown, material sourcing data |
Technical Architecture
The Battery Passport is built on EU-wide digital infrastructure:
- EU Common Data Service — A registry operated (or designated) by the European Commission that hosts the data or provides federated access to manufacturer-hosted data
- Decentralised data hosting — Manufacturers may host Battery Passport data themselves, with the EU Common Data Service providing access coordination and validation
- Interoperability requirements — Data formats follow standards to enable cross-system integration with supply chain management, recycling operational systems, and vehicle lifecycle systems
- QR code implementation — Must be permanent, readable throughout the battery’s lifetime, and link to the correct data record even if the manufacturer’s domain changes
Battery Passport vs. SBOM
A useful analogy for hardware engineers: the Battery Passport is to batteries what the SBOM (Software Bill of Materials) is to software — a structured, machine-readable inventory of what a product contains, where it came from, and how it behaves, accessible to downstream stakeholders for security, sustainability, and compliance purposes.
| Aspect | Battery Passport | SBOM |
|---|---|---|
| Subject | Physical battery | Software components |
| Mandated by | EU Battery Regulation | EU CRA (mandated), NIS2 (expected) |
| Content | Chemistry, carbon footprint, lifecycle data | Software components, versions, known vulnerabilities |
| Purpose | Sustainability accountability + end-of-life management | Cybersecurity risk management |
| Access | Public + tiered restricted | Manufacturer + authorities |
Implementation Challenges for Manufacturers
Implementing the Battery Passport is not trivial — it requires new processes across the organisation:
Manufacturing and Serialisation
Every battery unit or batch must receive a unique identifier at manufacturing time. This requires integration between production systems and the Battery Passport data platform — potentially a significant change to manufacturing execution system (MES) workflows.
Carbon Footprint Calculation
Calculating the carbon footprint per the required methodology requires:
- Lifecycle assessment (LCA) capability or an accredited third-party LCA provider
- Primary data from upstream suppliers (cell manufacturers, raw material processors)
- Third-party verification of the LCA result
For complex battery supply chains, collecting primary LCA data from all tiers is a multi-year capability-building effort.
State of Health Data
For batteries where State of Health must be updated throughout the lifecycle (EV batteries), a data pipeline must exist from the battery management system (BMS) or vehicle telematics back to the Battery Passport data record. This is a novel data architecture requirement.
Long-Term Data Availability
The Battery Passport data record must remain accessible for the battery’s entire lifetime — potentially 10–20 years for EV batteries. Manufacturers must plan for long-term data hosting, including the risk of corporate restructuring, brand changes, or product line discontinuation.
Related Terms
- EU Battery Regulation — The parent regulation mandating the Battery Passport.
- Digital Product Passport — The broader EU framework; Battery Passport is its first mandatory implementation.
- SBOM — Software equivalent of the Battery Passport concept — structured product content inventory.
- RoHS / REACH — Complementary substance restriction regulations with overlapping material declaration requirements.
Battery Passport implementation requires cross-functional coordination across product design, manufacturing, supply chain, and IT. Inovasense helps hardware manufacturers understand their Battery Passport obligations, plan implementation timelines, and integrate passport requirements into hardware design processes — alongside broader EU compliance consulting for connected battery-powered products.
Official References
- Regulation (EU) 2023/1542 (Battery Regulation) — Article 77: Battery Passport — EUR-Lex (defines battery passport requirements)