Regulation (EU) 2023/1542
Compliance gets you to market.
Proof keeps your batteries yours.
From 18 February 2027, every light-vehicle battery placed on the EU market needs a digital passport, whatever its size. Most platforms stop at a QR code. Ours also proves each battery is genuine at every NFC tap, and keeps its real state of health on record for warranty, resale and second life.
Sample passports
Three scenarios. Opening a record is equivalent to scanning the QR code or tapping the NFC tag on the physical battery.
How it compares
Every serious platform hosts a compliant passport. The difference is what happens after the scan: whether the battery can prove it is genuine, and whether its passport reflects the battery in front of you or a spec sheet.
| Capability | Stele Passport | Circuland | Vertex | EV-scale platforms |
|---|---|---|---|---|
| Built around light vehicles | Native: e-bikes, e-scooters, mopeds | One segment of three | One segment of three | EV and enterprise first |
| Annex XIII hosting, statutory QR | Yes | Yes | Yes | Yes |
| NFC on the battery | Cryptographic, NTAG 424 DNA | As an access carrier only | Not offered | Not offered |
| Per-tap clone detection (SUN) | Yes | Not offered | Not offered | Not offered |
| Tamper evidence, BMS serial binding | Yes | Not offered | Not offered | Not offered |
| State of health in the passport | From BMS read-outs at service visits | Not a core feature | Manual CSV upload | Via EV telematics |
| Upstream carbon and due diligence | Imported from your suppliers | Full pipeline | Built-in calculation | Full pipeline |
Assessment based on publicly available product documentation, July 2026. “EV-scale platforms” refers to enterprise suites such as Circularise, Circulor and Bosch Battery Passport, built for automotive supply chains.
Why NTAG 424 DNA
Authenticity is our strongest claim, so here is exactly how it works: certified secure silicon from NXP, with a key-management and verification stack we developed in-house.
Tap
Any NFC phone reads the tag, no app required. At every tap the chip computes a fresh AES cryptogram over its unique ID and an internal tap counter, and appends it to the passport URL it hands the phone.
Verify
Our verification service checks the cryptogram against that battery’s individual key and the expected counter value, and renders the verdict on the passport page in under a second.
Trust
A photographed QR or a copied URL fails: the counter has moved and the signature no longer matches. A cloned tag fails outright: without the key, it cannot sign anything.
Keys that never leave the vault
Every battery carries its own cryptographic key, derived in-house from an isolated root through our proprietary key-management stack. Keys are never shared across batteries, never exposed to the phone, and each manufacturer lives in its own key domain. If a single tag were ever compromised, the blast radius is exactly one battery, and revoking it is one row in a database, not a product recall.
Tamper evidence you can check from anywhere
The tag wires a conductive loop into the label itself. Peel it off and the loop breaks, permanently: from that moment, every tap carries “tamper: open” inside the signed payload. No inspector and no trained eye needed, the passport flags a transplanted tag online, at the very next scan, wherever in the world it happens.
See it live on sample SP-2025-00088The statutory passport, hosted
Every Annex XIII data point, the statutory QR carrier on each pack, and hosting designed around the regulation’s data-continuity obligations for the battery’s full service life.
Cryptographic proof, per battery
A QR code can be photocopied. An NTAG 424 DNA tag cannot: one-time signatures at every tap, tamper detection and BMS serial binding make counterfeits and tag transplants detectable.
State of health, from the workshop
SoH, cycle count and thermal history captured from BMS read-outs at service visits, with no telematics hardware and no connectivity subscription.
Key dates
Battery passport becomes mandatory for every LMT battery placed on the EU market, with no capacity threshold.
Supply-chain due diligence obligations apply, with an exemption for operators below €40M turnover.
Carbon footprint declaration required for LMT batteries, imported into the passport, which already provides for it.