Battery Passport Readiness for Defence and Marine OEMs

From 2027, the Digital Battery Passport (DBP) becomes mandatory for most EV and industrial batteries in the EU. But for Defence and Aerospace manufacturers, compliance is only the beginning. 

The DBP will transform how battery data is captured, verified, and shared across global value chains. For strategic industries – where traceability meets national security, performance requirements, and geopolitical risk – the challenge is not just ticking boxes. It’s ensuring the passport works in the real world. 

Understanding the Regulatory Scope

The EU Battery Regulation (Regulation 2023/1542) applies to a wide range of battery types – from portable to EV to industrial – with a particular focus on batteries over 2 kWh, the kind used in vehicles, energy storage systems, and heavy-duty equipment. 

However, batteries used exclusively in defence equipment are formally exempt from the regulation.  

But here’s the catch: 

Most OEMs and Tier 1 suppliers do not operate in isolation. They produce dual-use systems - drones, marine vessels, trucks, or portable energy banks – that serve both civilian and defense contracts. Batteries used in such platforms may still fall under regulatory scope, particularly when integrated into civilian infrastructure (e.g., ports, commercial vessels, humanitarian missions). 

Furthermore, traceability and ESG expectations don’t stop at exemptions. Even when formal compliance isn’t required, public procurement, allied cooperation, or sustainability mandates often push for alignment with EU-compliant traceability and digital documentation standards. 

In short: Exemption doesn’t mean insulation. The data trail, ethical sourcing, and safety expectations built into the DBP are increasingly seen as baseline criteria, even in defense-adjacent sectors. 

What These Sectors Need Now 

These sectors operate under different rules, priorities, and risk profiles. The real question is not how to comply – it is how to exploit DBP as a strategic edge when others treat it as red tape. What these areas need is a DBP that works in their world – where durability, security, and lifecycle predictability matter more than ticking boxes. 

To be truly exploitable in defence OEM environments, the Digital Battery Passport must do more than meet civilian regulation: 

1. Safety Monitoring That Doesn’t Stop at First Life

In military and marine deployments, batteries are exposed to unpredictable environmental and mission-critical stressors – making safety monitoring non-negotiable. Done right, this becomes a revenue enabler: enabling proactive maintenance contracts, performance-based warranties, or second-life readiness scoring – not just regulatory box-ticking. 

• Defence: Batteries may be stored for years, then deployed into extreme heat, cold, or kinetic environments 
• Marine: Saltwater exposure, vibration, and high discharge loads demand active, context-aware safety signals 

What is needed: Smart integration of BMS data, event logs, and second-life risk indicators into DBP fields – not just for compliance, but to prevent failures. 

2. Operational Data That Survives Ownership Transfer

OEMs and fleet operators often lose visibility once a battery leaves their system – whether sold, leased, or handed off to a different division. This breaks the chain of operational intelligence, reducing chances for repair, reuse, or second-life deployment. 

What is needed: A well-designed DBP makes every battery a long-term asset – traceable, recoverable, and resellable – even across sectors. A DBP that maintains structured, transferable lifecycle data across owners and applications. Military and marine sectors require continuity even when equipment changes hands or is repurposed. 

3. Air-Gapped Environments: Traceability vs. Tactical Obscurity

Digital traceability sounds great – until you realize your fleet may be broadcasting sensitive lifecycle data in hostile waters. 

In military and classified marine operations, visibility is a double-edged sword. Battery data traveling via satellites or networked DBP systems could reveal ship locations, mission timelines, or maintenance vulnerabilities. This is not just a compliance issue – it is a national security one. 

In fact, for some missions, vanishing is the strategy. Systems must be able to function, log, and even certify without live connectivity or cloud exposure. 

That’s why DBP solutions for military and marine use must: 

• Operate air-gapped when necessary 
• Store lifecycle and safety data locally 
• Sync selectively at trusted intervals 
• Be audit-capable without constant transmission 

The exploitable angle? Vendors who develop secure, offline DBP infrastructure – including encrypted portable systems and ruggedized local diagnostics – won’t just meet compliance. They’ll be the go-to partners for defense and dual-use contracts, where invisibility is not a flaw but a feature. 

4. Dual-Use and Export Complexity: Traceability Without Exposure

Defence applications are often subject to export controls, ITAR, or classified use. The DBP must be secure – balancing traceability and accountability with IP protection and geopolitical sensitivity. 

What is needed: Configurable access tiers and metadata abstraction. OEMs and defense suppliers need to demonstrate ESG compliance without exposing strategic data or operational context. Controlled sharing is not just a risk mitigation tactic – it is an opportunity to enter sensitive supply chains that require auditable but secured ESG and origin data. 

5. Lifecycle Control as a Strategic Asset

For OEMs in particular, DBP offers more than compliance – it is a way to retain value post-sale. Battery-as-a-service, warranty optimization, and second-life repurposing all depend on granular, verified lifecycle data. 

What is needed: Integration of DBP into ERP and product design systems. Traceability is not an afterthought – it starts at cell sourcing and extends through circularity. For OEMs, DBP is no longer a record – it’s a business model lever. Those who build in lifecycle intelligence from the start can unlock leasing, remanufacturing, and modular battery services before competitors even react. 

What is Next? 

Digital Battery Passport systems will not work if they are designed for ideal conditions. The defence, marine, and related OEM sectors must push now for DBP frameworks that: 

• Work in low-visibility, high-risk environments 
• Offer control over what data is shared and with whom 
• Capture second-life and end-of-life value 
• Are resilient, secure, and aligned with real-world operational constraints 

As EU Battery regulation moves from paper to enforcement, these sectors need not just compliance – but strategic advantage. While in exempt environments, DBP principles may not be enforced, but they are becoming indispensable. For military, marine, and dual-use OEMs, those who adopt traceability, lifecycle data control, and modular safety systems early won’t just stay ready – they’ll stay ahead. 

That said, these sectors producing dual-use systems have a narrow window to shape a DBP that fits their world – or be forced to retrofit it later. 

The opportunity? Influence, intelligence, and long-term control. 

The risk? Irrelevance in a compliance-driven commodity market. 

The time to shape the DBP for their world is now.

Dual-Use Battery Examples: Regulatory Applicability Table 

Under the EU Battery Regulation (Regulation (EU) 2023/1542), batteries placed on the EU market must comply with strict sustainability, safety, and circularity requirements – including the Digital Battery Passport (DBP), carbon footprint declarations, recycled content rules, and due diligence obligations for raw materials. 

However, Article 2 of the Regulation outlines certain exemptions, notably for military equipment, security-specific systems and space applications. This can create uncertainty for OEMs manufacturing dual-use products – i.e., products used in both civilian and defence/security contexts, such as drones, vehicles, or maritime equipment. Refer to our table below  

Key Takeaways for Dual-Use OEMs 

Exemptions depend on use, not technology 

A battery is only exempt if it is exclusively destined for military, space, or specific security use – not because it’s technically advanced or ruggedized. 

1. Police, fire, and civil security ≠ military 

Batteries for police vehicles, firefighting robots, or disaster relief are civilian applications under EU law and must comply with the Battery Regulation. 

2. Dual-use = assume compliance 

If your product is used both in civilian and military settings, or even has the potential for civilian sale, assume Digital Battery Passport (DBP) and full compliance apply. 

3. Sales channel determines regulatory outcome 

Even military-grade batteries sold to civilian buyers (e.g. NGOs, journalists, commercial operators) are subject to DBP and due diligence rules. 

4. All dual-use batteries must be manufactured to regulation –  even if the DBP is never activated 

OEMs must design and produce dual-use batteries with DBP capability, because you can’t retrofit compliance after production. 

For batteries that end up only in exempted military, space, or specific security applications, the DBP may never be activated – but the battery itself must be built with DBP-readiness from the start. 

At Seraph, we help companies use circularity indicators not just to comply – but to compete. Whether it’s redesigning for faster disassembly or benchmarking data flows for traceability, the future belongs to those who translate sustainability into smart economics. 

Ready to harness the DBP for operational advantage? 

If you need support, guidance and insights on defence manufacturing excellence, Let’s talk  https://seraph.com/contact-us/

About Seraph  

Seraph is a global operations and strategy consulting firm, that leads value chain improvements, restructurings, and turnarounds. We unite the disparate roles in operationally intensive businesses to create efficient operations, bridging the divide from concept to production. High-level decision-makers in manufacturing and industrial organizations rely on us to solve complex issues and launch initiatives that ensure success and sustainable change.

Seraph is a member of the BASE Battery Passport for Transparency and Circularity consortium.

The BASE project has received funding from the Horizon Europe Framework Programme (HORIZON) Research and Innovation Actions under grant agreement No 101157200 

Visit the BASE website here: https://base-digibattpass.eu/