EU Battery Passport: Everything You Need to Know
The EU Battery Regulation, February 2027 deadlines, mandatory data fields, and how to deliver compliant battery passports.
The EU Battery Regulation: A New Era of Accountability
The EU Battery Regulation (EU 2023/1542) represents a landmark piece of legislation that fundamentally reshapes how batteries are manufactured, sold, used, and recycled within the European market. At its centre is the requirement for a digital battery passport — a comprehensive digital record that accompanies every industrial and electric vehicle battery throughout its lifecycle.
This regulation is the first EU legislation to mandate Digital Product Passports for a specific product category, making it the de facto pilot for the broader ESPR framework. How the battery passport is implemented will set precedents for every product category that follows.
- Adopted in August 2023, with phased implementation through 2031
- Applies to all batteries placed on the EU market, regardless of origin
- Covers portable, industrial, EV, LMT (light means of transport), and SLI batteries
- Battery passports mandatory from 1 February 2027 for EV and industrial batteries above 2 kWh
Note
The EU Battery Regulation is distinct from the ESPR — it was adopted earlier and operates on its own timeline, though the DPP requirements are designed to be interoperable with the broader ESPR framework.
What Is a Battery Passport?
A battery passport is a digital twin of a physical battery that contains detailed information about its composition, manufacturing history, performance characteristics, and end-of-life handling requirements. Unlike a simple product datasheet, the battery passport is a living document — updated throughout the battery's service life with performance degradation data, maintenance records, and eventually recycling outcomes.
The passport must be accessible via a data carrier (QR code or equivalent) affixed to the battery and linked to a globally unique identifier. It must be machine-readable and accessible to all relevant actors in the value chain: manufacturers, vehicle OEMs, service providers, second-life operators, and recyclers.
- Unique identifier for each battery unit (not just model-level)
- Accessible via QR code or equivalent data carrier on the battery
- Machine-readable and human-readable formats required
- Data persists for the battery's entire lifecycle including second-life applications
Mandatory Data Fields for Battery Passports
The EU Battery Regulation specifies an extensive list of data attributes that must be included in the battery passport. These fields cover the battery's identity, composition, performance, and sustainability credentials. The level of detail required is significantly more granular than typical product documentation.
Manufacturers should note that many of these data fields require information from upstream suppliers — cathode material origins, mineral sourcing declarations, and carbon footprint calculations spanning the entire supply chain.
- Battery identification: manufacturer, model, GTIN, serial number, date of manufacture
- Chemistry and composition: cathode/anode materials, electrolyte type, hazardous substances
- Performance data: rated capacity, voltage, cycle life, energy density, round-trip efficiency
- Carbon footprint: lifecycle CO₂ equivalent per kWh, calculated per ISO 14067
- Recycled content: percentages of cobalt, lithium, nickel, and lead from recycled sources
- Due diligence: supply chain due diligence documentation for raw materials
- State of health: capacity fade, impedance increase, remaining useful life estimates
- End-of-life: collection and recycling information, safety instructions for dismantling
Important
The carbon footprint declaration becomes mandatory before the battery passport itself — from February 2025 for EV batteries. Brands must begin carbon accounting now if they haven't already.
Compliance Timeline: Key Dates for Battery Manufacturers
The EU Battery Regulation follows a staggered implementation schedule, with different requirements activating at different dates. Understanding this timeline is essential for resource planning and supplier engagement.
Notably, the regulation introduces requirements progressively — carbon footprint declarations first, then due diligence obligations, then the full battery passport — giving manufacturers incremental milestones rather than a single compliance cliff.
- August 2024 — Regulation fully applicable for most provisions
- February 2025 — Carbon footprint declaration required for EV batteries
- August 2025 — Due diligence policies for raw material supply chains
- February 2027 — Battery passports mandatory for EV and industrial batteries (>2 kWh)
- August 2027 — Carbon footprint performance classes introduced
- August 2028 — Maximum carbon footprint thresholds enforced
- 2031 — Mandatory recycled content minimum percentages
Supply Chain Due Diligence Requirements
The Battery Regulation introduces mandatory supply chain due diligence obligations aligned with international standards (OECD Due Diligence Guidance for Responsible Supply Chains of Minerals). This is particularly significant given the well-documented concerns around cobalt mining in the Democratic Republic of Congo and lithium extraction in South America.
Economic operators must establish due diligence policies, identify and assess risks in their supply chains, implement risk mitigation strategies, and report publicly on their findings. This applies not just to battery cell manufacturers but to any company placing batteries on the EU market — including vehicle manufacturers and electronics brands.
- Due diligence policy covering cobalt, lithium, nickel, natural graphite, and manganese
- Risk identification across the full mineral supply chain
- Third-party audits of due diligence systems
- Public reporting on supply chain risks and mitigation measures
- Applies to all economic operators, not just direct mineral purchasers
Carbon Footprint Calculation and Reporting
Battery carbon footprint declarations are calculated on a lifecycle basis, covering raw material extraction, processing, cell manufacturing, battery assembly, and transportation. The methodology follows Product Environmental Footprint Category Rules (PEFCR) specific to batteries.
The regulation introduces a three-phase approach: first, mandatory carbon footprint declarations (transparency); second, performance classes (comparability); third, maximum thresholds (enforcement). This progression gives the market time to respond while steadily raising the bar.
- Lifecycle assessment covering cradle-to-gate emissions
- Methodology aligned with ISO 14067 and EU PEFCR for batteries
- Performance classes (A-E) enabling cross-battery comparison
- Maximum carbon footprint thresholds phased in from 2028
- Third-party verified calculations required for market access
Tip
SmartLinks can host and dynamically display carbon footprint data within your battery passport, including performance class labels and comparison tools for consumers and B2B buyers.
Second-Life Batteries and State of Health Tracking
A key innovation of the Battery Regulation is its recognition that batteries retain significant value after their primary application. An EV battery that has degraded below automotive thresholds may still be perfectly suitable for stationary energy storage. The battery passport facilitates this second-life market by maintaining continuous state of health (SoH) records.
The passport must include real-time or regularly updated SoH data — capacity fade, impedance changes, charge cycle count — enabling second-life operators to assess a battery's remaining useful life without physical testing. This transparency dramatically reduces the risk and cost of repurposing batteries.
- State of health data updated throughout the battery's service life
- Capacity fade tracking: remaining percentage of original rated capacity
- Cycle count and charge/discharge history
- Safety incident records and maintenance history
- Facilitates valuation for second-life applications
Implementing Battery Passports with Connected Packaging
Connected packaging technologies — particularly QR codes and NFC tags — provide the ideal delivery mechanism for battery passport data. A QR code printed on the battery label or an NFC tag embedded in the casing gives instant access to the full digital passport via a smartphone scan.
SmartLinks enables battery manufacturers and OEMs to deploy compliant battery passports rapidly. Our platform manages the unique identifiers, hosts the structured data, and presents it through audience-specific interfaces: consumers see safety and recycling information, service technicians access performance diagnostics, and regulators retrieve compliance documentation.
- Durable QR codes rated for industrial environments (UV, heat, chemical resistance)
- NFC tags with tamper-detection for authenticity verification
- Dynamic data updates: push state of health changes without altering the physical label
- Regulatory-grade data hosting with 10+ year retention guarantees
- Multi-stakeholder access: different views for consumers, service centres, and authorities
- API integration with battery management systems (BMS) for automated SoH reporting
Tip
SmartLinks battery passport solutions integrate directly with existing Battery Management Systems via API, enabling automated state of health updates without manual data entry.