Introduction

The EU Battery Regulation is turning battery compliance into a market access issue shaped by product-level carbon data, supplier traceability, and digital records. For executive teams, 2027 is the headline milestone because battery passport and QR code requirements take effect for key battery categories — but the operational work starts well before that, with carbon footprint obligations already in force and due diligence preparation requiring substantial lead time ahead of its own 2027 deadline.

Key Takeaways

• The EU Batteries Regulation entered into force on 17 August 2023 and has applied since 18 February 2024, with major requirements phased in over time
• Battery due diligence obligations were postponed to 18 August 2027 under Regulation (EU) 2025/1561 (the Omnibus IV amendment, adopted July 2025). Preparation should begin well ahead of this date, as third-party verification must be completed by the deadline — not started
• From 18 February 2027, each LMT battery, each industrial battery above 2 kWh, and each electric vehicle battery placed on the EU market must have a battery passport
• Battery carbon footprint is measured as kg of carbon dioxide equivalent per one kWh of the total energy the battery is expected to provide over its service life
• UK battery rules focus on substance restrictions, labelling, removability, and collection and recycling, whilst the EU framework extends further into life cycle sustainability, carbon data, and digital product records

What Does the EU Battery Regulation Require by 2027?

The regulation creates a phased compliance roadmap rather than a single deadline. By 2027, companies must be ready for product design, labelling, QR-linked information, and digital battery passport obligations, whilst earlier requirements in 2025 and 2026 already shape carbon data preparation and supplier management. Due diligence obligations — though delayed to August 2027 — require internal systems, supplier engagement, and third-party verification to be built out well in advance.

Key Milestones

• 18 February 2024: The regulation begins to apply
• 18 February 2025: Carbon footprint declaration requirements begin for electric vehicle batteries
• 18 February 2026: Carbon footprint declaration requirements expand to rechargeable industrial batteries above 2 kWh (except those used exclusively for external storage) and LMT batteries
• 18 February 2027: Battery passport obligations begin for LMT batteries, industrial batteries above 2 kWh, and electric vehicle batteries
• 18 February 2027: QR code access and removability and replaceability requirements take full effect across product and after-sales planning
• 18 August 2027: Battery due diligence obligations begin for in-scope operators (postponed from August 2025 under Regulation (EU) 2025/1561)

Battery Categories in Scope

The regulation applies across five battery categories, and the category determines which obligations apply and when. Executive teams should map their product portfolios early so regulatory deadlines are matched to the right products and internal owners.

• Portable batteries
• LMT batteries
• SLI batteries
• Industrial batteries
• Electric vehicle batteries

Business Implications

The regime operates as a whole-life-cycle framework covering sourcing, use, collection, recycling, and repurposing. Battery compliance now touches product design, sustainability data, supplier controls, after-sales support, and digital record management — making it a cross-functional issue, not a compliance team problem.

How Is Battery Carbon Footprint Calculated per kWh?

Battery carbon footprint turns product sustainability into a measurable compliance obligation. Rather than relying on general corporate emissions reporting, companies need battery-level declarations linked to specific battery models and manufacturing plants — which raises the stakes for auditable data, consistent methodology, and strong supplier inputs.

Calculation Basis

Carbon footprint declaration requirements apply to electric vehicle batteries from February 2025, and to rechargeable industrial batteries above 2 kWh (except those used exclusively for external storage) and LMT batteries from February 2026. In practical terms, each declaration must measure kg of carbon dioxide equivalent per one kWh of the total energy the battery is expected to provide over its service life.

Data Boundary

The life cycle boundary is broad — data collection cannot stop at the factory gate. Emissions must be captured across all major life cycle stages:

• Raw material acquisition and pre-processing
• Production
• Distribution
• Electricity generation where relevant
• End-of-life stages

Carbon offsets may not be used to reduce the reported figure, though they may be disclosed separately as additional environmental information.

Why the per kWh Metric Matters

The result depends on both total life cycle emissions and the energy the battery delivers over repeated cycles during its service life. That makes data quality, performance assumptions, and supplier transparency important to both compliance readiness and future competitiveness.

What Is the Battery Passport, and Why Does It Matter in 2027?

The battery passport marks a fundamental shift in how compliance information is recorded and shared — from paper-based documentation to digital, traceable, product-specific records. Each passport is accessible through a QR code, making data architecture and governance central to regulatory readiness.

Passport Scope

From 18 February 2027, each LMT battery, each industrial battery with a capacity greater than 2 kWh, and each electric vehicle battery placed on the market or put into service must have a battery passport. The passport combines battery-model information with data specific to the individual battery.

Access and Control

The passport operates on a tiered access model, designed to serve regulatory, operational, and circularity purposes simultaneously:

• Public information accessible to all
• Information reserved for authorities and conformity assessment bodies
• Information for parties with a legitimate operational need, including repair, remanufacturing, second-life, dismantling, and recycling actors

Readiness Requirements

Building a battery passport capability is an operational infrastructure project, not a documentation exercise. Companies need a repeatable model that keeps product records accurate over time:

• Product master data discipline
• Unique identifiers linked to QR codes
• Clear ownership for creating and updating records
• Controlled access rights
• Reliable supplier inputs
• Data authentication and integrity controls

How Do EU Battery Rules Compare With UK Battery Requirements?

EU and UK battery rules share some common ground — both address substance restrictions, labelling, removability, and waste management — but diverge significantly in scope and ambition.

UK rules under the Batteries and Accumulators (Placing on the Market) Regulations 2008 focus on making collection and recycling compulsory, preventing batteries from being incinerated or landfilled, restricting hazardous substances, and requiring correct labelling and removability. Specific controls include limits on mercury, cadmium, and lead; visible, legible, and indelible chemical labelling; the crossed-out wheeled bin symbol; and capacity labelling for portable rechargeable and automotive batteries.

The EU framework goes further. In addition to equivalent substance and labelling requirements, it layers on carbon footprint declarations, digital battery passports, and supply chain due diligence obligations — each requiring new data infrastructure, supplier governance, and long-term record management.

For companies serving both markets, a single compliance checklist will not be sufficient. The data foundation can be shared, but the obligations are structurally different.

What Supply Chain Due Diligence Obligations Should Companies Prepare for Now?

Battery due diligence obligations were postponed from 18 August 2025 to 18 August 2027 under Regulation (EU) 2025/1561, part of the EU’s Omnibus IV simplification package. The delay reflects real-world challenges — accreditation of notified bodies, alignment with broader EU due diligence frameworks, and complex supply chains that take time to map. However, the postponement does not reduce the preparation burden. Third-party verification must be completed by August 2027, which means systems need to be operational well before that date.

Scope and Thresholds

The obligations apply to economic operators that place batteries on the market or put them into service. Under the original regulation, an exemption applied to operators with a net annual turnover below EUR 40 million. Omnibus IV proposes raising this threshold to EUR 150 million for companies classified as “small mid-caps” — though this element remains at the proposal stage as of the time of writing and has not yet been formally adopted. Companies should confirm their applicable threshold against the latest regulatory text before finalising compliance plans.

Core Due Diligence Elements

The due diligence requirement is structured as a management system, not a disclosure exercise. Companies must establish and maintain:

• A formal battery due diligence policy
• Communication of that policy to suppliers and the public
• Coverage of relevant raw materials — cobalt, natural graphite, lithium, and nickel — and associated social and environmental risks
• Clear top-management responsibility
• Supply chain transparency and upstream traceability
• Records retained for at least 10 years

Verification and Supplier Readiness

Third-party verification by a notified body is required under Article 51 of the regulation, followed by periodic audits under Article 48. For many companies, the harder challenge will be supplier data quality — carbon footprint declarations, battery passports, and due diligence controls all depend on upstream information that is complete, consistent, and defensible. The European Commission is expected to publish official due diligence guidelines by 26 July 2026, which will provide further implementation guidance.

What Should Executive Teams Do Before 2027?

The most effective response is to treat battery compliance as a coordinated transformation programme. The regulation affects product design, carbon accounting, supplier engagement, labelling, documentation, and digital records — making cross-functional ownership essential.

Immediate Priorities

• Map products by battery category
• Match each category to applicable dates and obligations
• Identify internal owners for carbon footprint, battery passport, due diligence, and labelling workstreams
• Review supplier data gaps and traceability controls
• Build a product data model that links battery model, manufacturing plant, and compliance documentation

Operating Model Decisions

Several structural decisions shape whether compliance can scale efficiently across product lines and geographies:

• Whether product and plant data are governed centrally or locally
• How supplier evidence is requested, reviewed, and escalated
• Which teams own QR code, passport, and record updates
• How documentation is retained for audits and regulatory review
• How EU and UK requirements are managed without unnecessary duplication

Executive Call to Action

Now is the right time to launch a cross-functional readiness programme, align battery category mapping with regulatory milestones, and build the carbon accounting and supplier traceability capabilities needed for market access in Europe. The postponement of due diligence to 2027 does not reduce the preparation burden — third-party verification must be completed by that date, which requires operational readiness well in advance. Companies that move early will be better positioned to manage compliance cost, reduce execution risk, and build a resilient battery data foundation.

Conclusion

The EU Battery Regulation is reshaping battery compliance into a life cycle management issue that connects product sustainability, supplier traceability, and digital records. For executive teams, 2027 is a critical convergence point — battery passports, QR code requirements, and due diligence obligations all land in the same year. The practical work starts earlier, with carbon footprint obligations already active and preparation for 2027 requiring both infrastructure and supplier governance that cannot be built overnight.

Leaders should use the next planning cycle to formalise ownership, strengthen supplier governance, and build the carbon accounting and battery data capabilities required for long-term market access.

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