This is simply a guide. Please refer the EU directives for more details. Sooner or later, an industrial battery sold into Europe will have to arrive with a number attached: the greenhouse gases emitted in making it, declared, verified and printed. Not an environmental brochure — a figure, per battery model and per manufacturing plant, calculated by a prescribed method and checked by a third party as part of the conformity file. Electric-vehicle batteries went first; rechargeable industrial batteries above two kilowatt-hours are next, which puts anyone shipping stationary or traction batteries into the European Union in scope. A single two-volt cell of reasonable size clears two kilowatt-hours on its own, and a substation bank clears it many times over. For an exporter, the interesting question is not whether the number will be flattering. It is whether you can prove it.
What the declaration actually is
Article 7 of the European Union’s battery regulation requires a carbon-footprint declaration for the battery categories it covers. In outline, the figure is a life-cycle result — raw material extraction and refining, component manufacture, assembly, distribution and end-of-life treatment — expressed against the energy the battery delivers over its service life rather than against its mass, so that a long-lived battery is credited for its longevity. It is calculated per model and per plant, which is the detail people miss: two identical batteries made in two different factories will carry two different numbers, because the factories buy different electricity. The method is not left to the manufacturer’s judgement — the European Commission prescribes it through delegated and implementing acts, with technical groundwork published by the Commission’s own Joint Research Centre, so that nobody can flatter themselves with a convenient assumption. Independent verification is required, and the declaration becomes part of the product’s compliance dossier: the same machinery that governs safety conformity, pointed at carbon. Later steps add performance classes, so batteries can be compared at a glance, and eventually maximum thresholds above which a battery may not be sold at all.
Where the timetable honestly stands
Here we must be careful, because this is the part of the subject where confident writing outruns confirmed fact. The phasing is by battery category: electric-vehicle batteries first, from 2025; rechargeable industrial batteries above two kilowatt-hours next, for which compliance sources widely publish 18 February 2026; light-means-of-transport batteries and those with external storage later in the decade. But the regulation ties each step to the entry into force of the relevant delegated act on methodology and implementing act on the declaration format — so the operative date is the later of the calendar date and a period after those acts take effect. Those acts have run behind their original schedule, reputable compliance sources still describe the present position differently from one another, and as of the middle of 2026 no manufacturer can safely plan from a magazine article. Take this page as a map, not a legal opinion: confirm the position in the Official Journal and with the notified body handling your conformity work before planning around any date, including the ones written here. The related deadline for the digital battery passport is set out in our guide to the battery passport, which carries the dates for that instrument and the recycled-content minimums that follow it.
Yes, this includes lead-acid
A persistent assumption in our trade is that Europe’s battery rules are lithium rules. They are not. The regulation is written by battery category and application — portable, starter, light means of transport, electric vehicle, industrial — not by chemistry. An industrial battery is an industrial battery whether its plates are lead or its cells are lithium iron phosphate. If you sell stationary banks for substations and telecom sites, traction batteries for warehouse fleets, or battery packs for underground mining equipment into the European market, the obligations arrive on the same schedule as anyone else’s. The threshold that matters here is capacity, not chemistry — and two kilowatt-hours is a low bar in industrial work.
The good news, honestly stated
On the physics of the metric, lead-acid has a genuinely strong case, resting on two things. The first is the supply route for its main material: producing metal from recycled feedstock takes dramatically less energy than winning it from ore, and the lead battery industry runs largely on secondary lead — the point our guide to the closed loop makes in detail. A cradle-to-grave method that counts material production honestly should reward a battery built substantially from metal that has already been mined once. The second is longevity paired with an end-of-life route that genuinely functions: when the footprint is measured against energy delivered over service life, a cell that works for a decade and then re-enters the loop is being judged on its best axis. None of this makes lead-acid virtuous by declaration, and the industry has real burdens to answer for — smelting energy, transport mass, and the environmental discipline recycling demands, which our recycling guide discusses without softening. But a manufacturer with a clean supply route and an efficient plant should not fear this arithmetic.
The bad news: a story is not a declaration
Everything above is an argument. What the regulation wants is evidence, and that is different work. A declaration needs plant-specific primary data: how much electricity your factory consumed per battery and where it came from; documented supplier data for lead, polypropylene, separators, acid and hardware, in a form an auditor accepts; transport distances and modes; recycled-content documentation that traces back rather than merely asserting; and a service-life assumption defensible with test evidence rather than optimism. Most manufacturing supply chains in India — and in a good many other places — do not carry that paperwork today, because nobody has ever asked for it. The metering exists for the electricity bill, not per process; the supplier relationship is priced by the tonne, not documented by emissions factor. So the honest warning is not “the deadline is coming” but something more awkward: the data trail takes longer to build than the deadline allows, and it cannot be bought in the last quarter.
What to do this year
Four things, in order of how long they take. Start metering energy by process rather than by factory, because per-model figures cannot be reconstructed from an annual bill. Ask your material suppliers now for emissions data and recycled-content documentation, and treat one who can never provide either as a commercial risk rather than a paperwork nuisance. Keep the traceability records you already generate — batch, source, test — in a form that survives an audit, since the same discipline serves the passport requirement that follows. And put the question into your own purchasing: ask your battery suppliers what their carbon figure will be and how it will be verified, in the same breath as cycle life and total cost of ownership. Buyers asking early is what makes suppliers ready on time.
This page is a summary written to help you ask better questions, not legal or compliance advice, and the position is moving — verify anything you plan around against the Official Journal and your own advisers. If you have begun receiving carbon-footprint questionnaires from European customers, or you are a buyer working out what to ask, send us the questionnaire: we would far rather build the data trail alongside our customers, early and in the open, than discover the gap at somebody’s goods-inward desk. Where all this leaves lead-acid over the next decade is the subject of our dated, sourced outlook on the future of the lead-acid battery.