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This guide is for EV OEM plant and quality heads, battery pack assemblers, cell manufacturers, importers and the systems integrators scoping line-side marking for them. It covers what the draft says, what has not been announced, and how a 2W/3W or passenger-vehicle pack line would physically mark, read and reconcile 21-character IDs at production throughput.
What is a Battery Pack Aadhaar Number (BPAN)?
BPAN stands for Battery Pack Aadhaar Number. Under MoRTH's draft guideline it is a 21-character alphanumeric unique identification number assigned to a single battery pack — one pack, one number. It is the anchor to which the static and operational data about that pack is attached on a government-managed digital portal.
The programme began with an office memorandum dated 17 September 2025, by which the Ministry of Road Transport and Highways constituted a committee for the "Development of Guidelines for implementation of Battery Aadhaar System in India". Its output — the draft dated 30 December 2025, published on morth.gov.in — entered public coverage on 4–5 January 2026. Conceptually it is India's answer to the same traceability problem the EU creates for exporters, and the architecture will feel familiar to anyone who has read our guide to the Digital Product Passport for Indian exporters: a unique item identity, a persistent physical mark, and a data record that follows the item.
Who has to assign the BPAN, and what data goes to the portal?
The draft places responsibility on cell manufacturers, battery manufacturers and importers. They assign the BPAN and upload the initial data. An importer bringing packs into India is therefore not a passive party — the duty to originate the identity and the record sits with whoever puts the pack into the Indian market.
The data model has two halves:
- Static data — Battery Manufacturer Identifier; Battery Descriptor and Identifier; material composition; and carbon footprint. Assigned once, at origin.
- Battery Dynamic Data (BDD) — real-time or frequently updated operational status and performance information, uploaded on an ongoing basis.
The practical consequence is that the static half cannot be filled in honestly unless you know, per pack, which cells and modules went into it. That is a work-in-progress traceability requirement dressed as a data field, and it is the main reason pack assemblers are looking at line-side auto-ID now rather than after a compliance date appears.
Where must the BPAN be marked on the battery pack?
The draft requires the BPAN to be physically marked on the pack in both alphanumeric and QR code format, placed where it cannot be easily removed, erased, degraded or damaged. Both formats are required — the human-readable string and the machine-readable QR — and the durability language points at a mark that has to keep working well beyond the despatch bay.
That durability clause turns a labelling question into an engineering question. A pack lives with vibration, thermal cycling, humidity, cleaning agents, workshop handling and, on two- and three-wheelers, road grime and heat. Label stock, adhesive and mark location must be chosen against that environment, not against a warehouse carton — and chosen once, rather than reworked when the first field returns come back unreadable.
Which batteries and vehicles does the draft cover?
The draft prioritises EV batteries first, on the basis that they represent roughly 80–90% of India's lithium-ion demand. The vehicle scope named is L-category (two- and three-wheelers) plus M and N categories (passenger and commercial vehicles). Industrial batteries above 2 kWh are also recommended for coverage.
That puts the highest-volume lines in the country at the front of the queue: electric two- and three-wheeler pack assembly, where volumes are large, packs are small, and they move in trays and racks rather than one at a time. Swappable-battery operators and their pack suppliers should assume they are inside the frame.
Is BPAN law yet — should we release capex against it?
No. This is a draft guideline in stakeholder consultation. The stated implementation route is the Automotive Industry Standard (AIS) process, and as of writing no AIS number and no compliance date have been announced. Anyone quoting you a phase table or a deadline is telling you something the published draft does not.
Split the spend accordingly. The marking and data-upload obligation is regulatory and will be defined by the final AIS — hold that capex until the standard is numbered and dated. The line-side reconciliation problem is not regulatory; it exists today, it pays back today, and it is what the rest of this guide is about. Buy auto-ID for throughput and genealogy reasons and the eventual BPAN requirement lands on infrastructure you already own. Buy it purely to comply with an unwritten rule and you are guessing.
Before finalising any compliance plan, read the current guideline directly from morth.gov.in — draft guidelines change materially between consultation and notification.
Why does a QR code alone break down on a battery pack line?
A QR code needs three things a moving pack line rarely gives it: presentation, orientation and a clean surface. Someone or something must bring the code into a scanner's field of view, the right way up, unobstructed. Packs sitting in trays, racks and dollies do not offer that. The QR is right for the regulator; it is wrong for the conveyor.
UHF RFID answers a different question in the same workflow. A tag reads without line of sight, through a plastic tray, at a distance, and many tags resolve in one pass through a defined read zone — nobody handles the pack to make the read happen. Here is how the split falls out:
| Operational need | Alphanumeric + QR (required by the draft) | UHF RFID (optional, operational) |
|---|---|---|
| Regulatory inspection of a single pack | Yes — human-readable and phone-scannable, no special hardware | Not a substitute; requires a reader |
| Reading a pack inside a tray or rack | No — needs the code presented and oriented | Yes — no line of sight required |
| Reconciling a full rack in one pass | One code at a time | Bulk read of many tags in a defined read zone |
| Cell and module genealogy at station speed | Manual scan per component | Fixed reader at the station, hands-free |
| Reading a dirty, dented or overpainted returned pack | Often fails — the code is a surface feature | Still answers if the tag is intact or embedded |
| Marking as set out in the draft guideline | This is the mark the draft requires | Carries the same number; does not replace the mark |
Where does RFID actually earn its place around BPAN?
In four places, each with its own payback: at the line-side station, in cell-to-pack genealogy, in finished-goods and dealer stock, and in reverse logistics. None of these is a compliance argument. All are throughput, accuracy and labour arguments that happen to produce exactly the data the draft's static model asks for.
- 1. Line-side, no line of sight. Packs travel in trays, racks and dollies. A fixed reader with a properly bounded read zone at end-of-line test and at pack-out reconciles a whole rack in a single pass, with no operator orienting each pack to a scanner. The value is removing a presentation step from a cycle time, repeated every unit. Read-zone design — antenna placement, power and shielding so the station reads its own rack and not the next one — is the engineering that decides whether this works, and it is done on your floor, not on a spec sheet.
- 2. Cell-to-pack genealogy and WIP. The static data set requires knowing which cells and modules went into which pack — classic work-in-progress tracking, and the thing RFID has always done well inside a plant. Our guide to RFID for manufacturing and WIP tracking covers the station-level mechanics; the BPAN-specific point is that genealogy captured automatically is the only version of this record that stays true at volume, and the day you need to find every pack containing one suspect cell lot, it is the only version that answers.
- 3. Finished goods, dealer and swap-station stock. Cycle counts in the finished-goods or bonded store, dealer stock audits and battery-swap-station reconciliation all mean counting dozens of packs in a rack. A sweep with RFID handheld readers makes a daily count feasible instead of a quarterly one, and it is the same identity you assigned on the line — no second numbering scheme to reconcile later.
- 4. Reverse logistics. A pack returning from the field has a QR that is often filthy, dented, heat-affected or painted over. An embedded or on-metal RFID tag still answers. For warranty, refurbishment, second-life routing and recycling, identifying a pack that has stopped looking new is the whole job.
How do you get a 21-character BPAN into an RFID tag?
A 21-character alphanumeric string is longer than a default EPC memory configuration is set up to hold, so it is not a drop-in. In practice you either extend the EPC bank, store the full string in user memory with a shorter reference in EPC, or map the BPAN to a compact encoded identifier and hold the readable string in your database. All three are standard; it is an architecture decision, not a product decision, and it should be made before you buy tags.
Rather than guess at bit budgets, take the mechanics from a source that spells them out: our GS1 SGTIN-96 EPC encoding guide explains how identifiers are packed into EPC memory and where user memory comes in. Then pick a chip with enough memory for the approach you chose — chip families differ in user memory, EPC bank size and sensitivity, and that is far easier to change on paper than after tags are already on packs at volume. One rule holds regardless: the number encoded in the chip must be byte-for-byte the same BPAN printed and QR-coded on the pack. Two identities for one pack is how reconciliation projects fail.
Which RFID tag survives a battery pack enclosure?
Battery packs are metal or metallised-composite enclosures, and a standard paper or PET label inlay detunes badly on metal — read range collapses or the tag stops answering entirely. The relevant families are on-metal tags, PCB and ceramic tags, and high-temperature label stock designed to be applied to and read from a conductive surface.
| Tag family | Typical fit on a pack | What to check before you commit |
|---|---|---|
| On-metal UHF tags | Exterior of a metal or metallised enclosure, surface-mounted | Read range on your actual enclosure; adhesive vs mechanical fixing; footprint available on the pack face |
| PCB and ceramic tags | Small footprint, rugged, screw or recess mounting; suits tight pack faces | Mounting method, mechanical clearance, vibration retention over the pack's life |
| High-temperature RFID labels | Printed marking that must pass through heat during assembly or curing | Stock and adhesive rated for your process, verified against a datasheet — not assumed |
| Embedded tag inside the enclosure | Reverse-logistics resilience; identity survives external damage | Read performance from inside the enclosure must be proven on a real pack, early |
Three engineering factors decide this, all specific to your pack: vibration (does the fixing survive a three-wheeler's duty cycle, not a shelf), thermal cycling (does the adhesive creep or the substrate delaminate after repeated heat-and-cool), and surface chemistry (paint, powder coat, oils and release agents all change adhesive behaviour). Never accept a temperature or IP figure from a marketing page — take it from the product datasheet at the time you buy, and test on your own enclosure before fixing a bill of materials.
Can one label carry the alphanumeric, the QR and the RFID chip?
Yes — and for a BPAN line this is the neatest answer available. An RFID thermal-transfer printer-encoder prints the human-readable 21-character BPAN and its QR code onto the label while encoding the same identifier into the embedded chip, in one pass. One label, one application step, one identity, satisfying both the draft's marking requirement and the plant's read requirement.
Three things to get right: the printer-encoder should verify the encode before the label leaves the printer, so a failed chip is rejected rather than applied; the label design must place the readable string and QR where an inspector can see them on the mounted pack; and print durability must match the mark's expected life, usually meaning resin ribbon on synthetic facestock rather than wax on paper. Our range of RFID printer-encoders covers desktop and industrial duty cycles, and we can advise on stock and ribbon pairing for your surface. Where a printed label cannot survive the location, a pre-encoded hard tag alongside a separately marked QR is the fallback.
Which frequency and certification apply to RFID readers in India?
India's licence-free UHF RFID band is 865–867 MHz and readers must be built for it. The Short Range Devices exemption rules published on 10 December 2021 provide interrogator channels at 865.7, 866.3, 866.9 and 867.5 MHz, each 200 kHz wide, at up to 2 W e.r.p., with the exemption list revised on 18 January 2024. Equipment should be WPC/ETA compliant, and BIS certification applies to the relevant hardware.
The most expensive mistake in an India deployment is importing readers built for the 902–928 MHz band used in North America. That band sits outside India's licence-free allocation, tags tuned for the Indian band underperform against such readers, and the equipment cannot simply be re-flashed in a way that satisfies an audit. Buy hardware specified for 865–867 MHz from the outset. Identium Tech Solutions builds to the Indian band by default, which also removes import-certification lead time from your plan.
Regulatory note: spectrum rules, exemption lists and certification requirements change. Verify the current SRD exemption notification and equipment requirements with WPC (Ministry of Communications) and BIS, and verify the status of the Battery Pack Aadhaar guideline directly on morth.gov.in, before making any compliance or procurement decision.
What are we not claiming about RFID and BPAN?
To be unambiguous: the draft mandates alphanumeric and QR marking. It does not mandate RFID. Applying an RFID tag does not make you compliant, and omitting one does not make you non-compliant. RFID here is a second, machine-friendly identity carrying the same BPAN, adopted for operational reasons inside your own plant and supply chain.
We also make no claim about timelines — no AIS number and no compliance date have been announced. And we will not put per-pack costs, read-rate percentages or line-throughput figures in writing: those depend entirely on your enclosure, rack geometry, station layout and volumes. Any vendor quoting them before seeing your line is guessing. What we will do is measure them on your line.
Planning a BPAN-ready pack line? India RFID Store, the storefront of Identium Tech Solutions, offers a line-side tagging assessment for EV pack assemblers and importers: tag selection tested on your actual enclosure, read-zone design for end-of-line and pack-out stations, and printer-encoder specification so one label carries the alphanumeric, the QR and the chip. BIS and WPC certified, Indian-manufactured hardware, shipped pan-India. Talk to us before the standard is notified, not after.
Frequently asked questions
Is the Battery Pack Aadhaar system mandatory in India right now?
No. The guideline dated 30 December 2025 is a draft in stakeholder consultation, with implementation proposed through the Automotive Industry Standard (AIS) process. No AIS number and no compliance date have been announced, so verify the current status on morth.gov.in before planning against it.
Does the draft require RFID tags on battery packs?
No. It requires the 21-character BPAN to be marked on the pack in both alphanumeric and QR code format, where it cannot be easily removed, erased, degraded or damaged. RFID is not a stated requirement; plants add it for line-side and warehouse reading, not for compliance.
Who is responsible for assigning a BPAN?
Under the draft, cell manufacturers, battery manufacturers and importers assign the BPAN and upload the initial data to a government-managed digital portal. Importers are explicitly included, so bringing packs into India carries the same origination duty as making them here.
Which batteries and vehicles fall under the draft's scope?
EV batteries are prioritised first, cited as 80–90% of India's lithium-ion demand, covering L-category two- and three-wheelers plus M and N category passenger and commercial vehicles. Industrial batteries above 2 kWh are also recommended for coverage.
Can a standard RFID label be stuck straight onto a battery pack?
Usually not. Metal and metallised-composite enclosures detune standard inlays and read range collapses. On-metal tags, PCB or ceramic tags, or high-temperature stock made for conductive surfaces are the correct families, and all should be tested on your actual enclosure first.
Can one label carry the human-readable BPAN, the QR code and the RFID chip?
Yes. An RFID thermal-transfer printer-encoder prints the 21-character string and the QR code while encoding the same identifier into the chip in one pass, so a single label meets the draft's marking requirement and gives the plant a no-line-of-sight read.
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