Does the EU battery passport apply to defence equipment?
Not to equipment that is specifically military. Regulation (EU) 2023/1542 excludes batteries incorporated in, or specifically designed to be incorporated into, equipment connected with the protection of Member States’ essential security interests, arms, munitions and war material. Where that exclusion applies, none of the regulation’s obligations apply - including the passport requirement under Article 77.
The critical qualifier is “specifically military purposes”. The exclusion is drawn around the product and its intended purpose, not around the company that makes it or the customer that buys it. A battery engineered exclusively for a missile system, an armoured vehicle or a military communications set is out of scope. A standard industrial battery that happens to be sold to a defence ministry is not.
In practice this means a defence OEM cannot answer the question once for the whole business. Scope has to be assessed product by product, which is what the rest of this guide breaks down.
What the military exemption covers - and its limits
The exemption covers batteries whose design purpose is specifically military: cells and packs developed to a defence specification, integrated into war material, or designed for equipment protecting essential security interests. Batteries in equipment designed to be sent into space are excluded on the same basis.
Its limits are just as important as its coverage. The regulation expressly carves out of the exclusion any products that are not intended for specifically military purposes. That is where dual-use equipment sits: a ruggedised battery sold into both civilian and defence markets serves a general purpose, so its placing on the EU market stays inside the regulation regardless of who the end customer is.
The same logic applies to procurement. Buying a commercial battery for a military application does not retrospectively exempt it - the manufacturer or importer placed it on the market as a civilian product, and the obligations attached at that moment.
Where defence OEMs are in scope
Most defence groups touch the regulation through four routes. First, dual-use product lines: equipment designed for both civilian and military markets carries in-scope batteries, and where those are LMT batteries, industrial batteries above 2 kWh or EV batteries, a passport is required from 18 February 2027.
Second, COTS batteries. Commercial off-the-shelf cells and packs bought into defence programmes were placed on the EU market as general products, so the upstream manufacturer or importer owes the compliance - and defence buyers increasingly check that it exists, because a non-compliant battery is a supply risk.
Third, civilian subsidiaries and product lines. The exemption attaches to specifically military products, not to a corporate group, so a defence OEM’s commercial divisions follow the normal rules in full.
Fourth, infrastructure. Stationary energy storage at manufacturing sites, test facilities and bases involves industrial batteries that are ordinary in-scope products. The categories and thresholds are set out in our EU battery passport regulation guide, and every deadline that applies to them is mapped in the EU battery passport timeline.
What primes and defence customers are asking for
Even where the exemption applies, traceability expectations are arriving through contracts rather than regulation. Primes and system integrators are extending the supplier data requests they already run for conflict minerals and REACH to battery provenance: cell origin, chemistry, critical raw materials and carbon footprint.
The drivers are practical. Defence programmes run for decades, so obsolescence management and through-life support depend on knowing exactly what is inside each battery and who can still supply it. Security of supply reviews increasingly ask where cells and precursor materials come from. And where a platform has civilian variants, primes prefer one data standard across both.
The structured record the EU has defined for civilian batteries is becoming the de facto template for those requests. Defence suppliers who can already produce passport-grade data - even for exempt products - answer prime contractor questionnaires in days rather than months.
Data sensitivity: what a passport exposes and to whom
The most common defence-sector objection to battery passports is exposure: publishing composition, supply chain and performance data sounds incompatible with operational security. The framework is more nuanced than the objection assumes.
Access is tiered. A public layer is visible to anyone scanning the QR code - general product and sustainability attributes. Restricted layers, including detailed composition, supply chain due diligence information and the disassembly data recyclers need, are limited to actors with a legitimate interest and to authorities such as market surveillance and customs.
Storage is decentralised. Passport data is held by the economic operator or a service provider it appoints - not on a central EU server. The Commission’s registry stores identifiers and metadata only. The operator therefore keeps control of where the underlying data physically sits and who it grants access to.
For genuinely sensitive programmes the answer is simpler still: specifically military products are exempt, so no passport - and no disclosure - is required for them at all. The sensitivity question only arises for the civilian and dual-use products where the data is, by design, commercial rather than classified.
Compliance steps for defence OEMs before 2027
1. Segment the portfolio. Classify every battery-carrying product as specifically military (exempt), dual-use or civilian (in scope), and record the reasoning. This classification is the foundation for everything else and the first thing a customer or authority will ask to see.
2. Map the in-scope batteries to categories. LMT batteries, industrial batteries above 2 kWh and EV batteries placed on the EU market from 18 February 2027 need a passport; other categories carry labelling and reporting duties on their own dates.
3. Collect supplier data early. Cell chemistry, critical raw materials, recycled content and carbon footprint data come from the supply chain, and defence supply chains - with their long qualification cycles and restricted vendor lists - take longer than most to instrument.
4. Decide the data governance model. Choose where passport data will be hosted, who administers restricted-layer access, and how the same records will serve prime contractor questionnaires as well as the EU registry.
5. Pilot on one product line. A single dual-use or civilian battery line taken end-to-end - data collection, passport creation, QR access - surfaces the gaps while there is still time to close them before the deadline.
Defence battery passport FAQ
Are military batteries exempt from the EU battery passport?
Batteries incorporated in, or specifically designed for, equipment connected with the protection of Member States’ essential security interests, arms, munitions and war material fall outside Regulation (EU) 2023/1542 - but only where the product is intended for specifically military purposes. A battery designed exclusively for a military platform is therefore out of scope, including the passport obligation.
Does the military exemption cover dual-use equipment?
Generally no. The exclusion applies to products intended for specifically military purposes. Equipment that serves both civilian and military markets does not qualify simply because a defence customer buys it, so batteries in dual-use products placed on the EU market remain in scope of the regulation and, where the category applies, the battery passport.
Do COTS batteries used in defence products need a passport?
A commercial off-the-shelf battery is designed for the general market, not specifically for military purposes, so its placing on the EU market is in scope for the manufacturer or importer. Whether a passport is required depends on the battery category: from 18 February 2027 it applies to LMT batteries, industrial batteries above 2 kWh and EV batteries.
Does a defence OEM’s civilian product line need battery passports?
Yes. The exemption attaches to the specifically military product, not to the company. Civilian and commercial product lines of a defence group follow the normal rules, and in-scope batteries placed on the EU market from 18 February 2027 need a compliant passport.
Can sensitive supply chain data stay confidential in a battery passport?
Partly. The passport is layered: some attributes are public to anyone scanning the QR code, while commercially sensitive data such as detailed composition and supply chain information is restricted to actors with a legitimate interest and to authorities. Storage is decentralised - the data is held by the economic operator or its service provider, not on a central EU server.
When do defence-relevant battery passport obligations start?
The battery passport applies to in-scope batteries placed on the EU market from 18 February 2027 under Article 77 of Regulation (EU) 2023/1542. Other obligations of the regulation, such as carbon footprint declarations and due diligence, phase in around that date on their own timelines.
A note on legal certainty
The military exclusion in Regulation (EU) 2023/1542 is drawn by purpose, and borderline dual-use cases turn on the facts of each product. This guide is a practical orientation, not legal advice - classification decisions for specific programmes should be confirmed with your compliance and legal teams.