Battery recycling: the EU makes the loop mandatory.
EU Battery Regulation 2023/1542 turns battery recycling from a voluntary effort into a core obligation: binding collection targets, recycling efficiencies, recycled content from 2031 and full producer responsibility. This guide follows the battery through the circular economy - from black mass and second-life batteries to why no loop works without the digital battery passport.
- EU Battery Regulation 2023/1542 governs the complete battery loop - from collection targets and recycling efficiencies to mandatory recycled content in new batteries.
- From 18 August 2031, minimum recycled content is mandatory: 16% cobalt, 85% lead, 6% lithium, 6% nickel - documented, and significantly higher again from 2036.
- Second-life batteries are legally new products: whoever repurposes an EV battery into home storage counts as a manufacturer and needs a separate, linked battery passport.
- The digital battery passport is the tool of the loop: it gives recyclers dismantling data, documents recycled content and tracks the battery's status across its entire life cycle.
Circular economy by law: extended producer responsibility
At the heart of the regulation sits extended producer responsibility: whoever places batteries on the EU market stays responsible until their end of life - organisationally and financially. That includes registration in each member state, free take-back of waste batteries and meeting the statutory collection targets:
| Battery category | Status today | Step 1 | Step 2 |
|---|---|---|---|
| Portable batteries | 45% (since 2023) | 63% by end of 2027 | 73% by end of 2030 |
| LMT batteries (e-bike, e-scooter) | Newly regulated | 51% by end of 2028 | 61% by end of 2031 |
| Industrial, EV & SLI batteries | Take-back duty | Free take-back, unlimited | Full capture via certified recyclers |
Who the regulation affects overall and which other deadlines are running is covered in the overview of the EU Battery Regulation 2023/1542 - and what happens on violations in Non-compliance risks.
How battery recycling works: from waste battery to black mass
Lithium batteries are not waste - they are a raw material depot: a tonne of waste batteries contains more lithium and cobalt than the corresponding ore volume in mining. The industrial recycling process runs in five steps - and at two of them, data quality decides whether the process is economically viable:
Waste batteries are collected, discharged and assessed: if the state of health is high enough, the battery goes into second-life repurposing instead of recycling - with the battery passport providing the data basis.
Open the pack, remove modules and cells, separate electronics and cabling. Dismantling instructions and safety information become mandatory battery passport content in 2027 - precisely for this step.
Cells are shredded and sorted: casings and aluminium and copper foils are separated. What remains is black mass - the fine electrode powder containing lithium, cobalt, nickel and manganese.
Hydrometallurgy (chemical leaching) or pyrometallurgy (smelting) recover battery-grade metals from the black mass - from the end of 2031, 95% of cobalt and 80% of lithium must be recovered.
The secondary raw materials flow into new cathode materials as recyclate. From 2031 this loop is mandatory: new batteries must contain documented minimum shares of recycled content.
Black mass becomes a strategic raw material
The EU classifies lithium, cobalt and nickel as critical raw materials - black mass from battery recycling is the only significant EU-domestic source of them. That is why the regulation couples recycling targets directly to recycled-content duties: what is recovered must flow back into new cells.
How the recycling process runs safely and with high yield - from discharging through dangerous-goods transport to hydro- and pyrometallurgy - is explored in the guide Safe & Efficient Battery Recycling.
Recycling targets in detail: efficiency and material recovery
Annex XII of the regulation sets two kinds of recycling targets: recycling efficiency measures the recovered mass share of the whole waste battery, while material recovery targets govern the recovery of individual metals. Both layers are binding for recyclers - and define how much secondary material will be available to the market:
| Target | Step 1 | Step 2 |
|---|---|---|
| Recycling efficiency, lithium-based batteries | 65% since end of 2025 | 70% from end of 2030 |
| Recycling efficiency, lead-acid batteries | 75% since end of 2025 | 80% from end of 2030 |
| Recovery of lithium | 50% by end of 2027 | 80% from end of 2031 |
| Recovery of cobalt, copper, nickel, lead | 90% by end of 2027 | 95% from end of 2031 |
Which cell chemistries contain which metals - and thus determine what recycling can recover - is covered in Battery chemistries.
Recycled content from 2031: recycling becomes a sourcing duty
The regulation's real lever sits in Article 8: from 18 August 2031, new industrial, EV and SLI batteries must contain binding minimum shares of recycled material - the recycled content. Even earlier, from 2028, documenting the recycled content per model and plant becomes mandatory. Recycling thereby turns from a disposal topic into a sourcing strategy:
| Material | Minimum recycled content from 18 Aug 2031 | From 18 Aug 2036 |
|---|---|---|
| Cobalt | 16% | 26% |
| Lead | 85% | 85% |
| Lithium | 6% | 12% |
| Nickel | 6% | 15% |
Recycled content lives in the battery passport
The documented recycled content is a mandatory entry in the digital battery passport - together with the carbon footprint and material origin. Without clean per-model values, no compliant passport can ship from 2027. All mandatory fields are listed in Battery passport data.
Second-life batteries: the second life before recycling
Not every waste battery belongs straight in the shredder. An EV battery counts as too weak for the vehicle at roughly 70–80% remaining capacity - yet as a stationary second-life storage unit it often works for another decade. The regulation classifies this repurposing clearly:
Whoever repurposes a battery for a new use legally places a new battery on the market - with all duties attached: conformity, labelling and a battery passport of its own.
The new passport of the second-life battery links to the original one; status ("repurposed") and health data are carried forward - the history stays complete.
Whether a battery enters a second life or goes to recycling is decided by SoH and usage data from the passport - without that data, every second-life assessment is guesswork.
Which battery types need the passport and how storage systems are classified is shown in Battery models - the storage perspective is covered on Storage & BESS.
No loop without the battery passport: data as infrastructure
Collection targets, recycling efficiency, recycled content, second life - every one of these duties rests on the same foundation: reliable data per battery. That is exactly why the regulation introduces the digital battery passport from 18 February 2027. For the circular economy it takes on three jobs:
Dismantling instructions, cell chemistry, safety information and material composition - available through the "legitimate interest" access level, straight from the QR code on the battery.
The passport documents the recycled content per material - the basis on which market surveillance checks the Article 8 minimum shares from 2031.
From placing on the market through repurposing to recycling: the passport records the battery's status and stays available even after its end of life.
What a finished passport looks like is shown in the battery passport example; how to set one up in practice in Create a battery passport and the guide to choosing battery passport software.
Frequently asked questions on battery recycling & recycled content
What is recycled content in batteries?
Which recycling targets apply to batteries in the EU?
What is black mass?
What are second-life batteries?
What does extended producer responsibility mean for batteries?
Why does battery recycling need the digital battery passport?
Where do industrial and EV waste batteries go?
Sources & further reading
Recycled content, dismantling data, life-cycle status - all in one compliant battery passport.
Batteriepasswerk captures the circular-economy fields of the EU Battery Regulation in a structured way per model - recycled content, material composition and dismantling information included - and generates serialised passports with a QR code for every unit. EU-hosted, compliant with EU 2023/1542 and DIN DKE SPEC 99100.