CLN Energy lithium iron phosphate (LiFePO4) packs are built and tested to UN 38.3, IEC 62619, IEC 61000, UL 1973 and UL 9540A, and the Noida plant is certified to ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018. Eight named standards, each set out below with what it actually covers — so a buyer can match them against a tender requirement rather than take a general claim on trust.
By CLN Energy Limited BSE SME listed, scrip 544347 Lithium battery manufacturer, Noida Reviewed
What the packs themselves are built and tested to. These are the ones that decide whether a battery can be shipped, installed and approved.
The UN Manual of Tests and Criteria for lithium cells and batteries in transport. A pack is put through altitude simulation, thermal cycling, vibration, shock, external short circuit, impact and overcharge before it may be shipped by road, sea or air. Without it a battery cannot legally move through the logistics chain.
The international safety standard for secondary lithium cells and batteries in industrial use, covering both stationary storage and motive power. It addresses the failure modes that matter in the field - internal short circuit, thermal abuse, overcharge and propagation from one cell to the next. For a telecom site or an energy storage installation this is the most relevant single standard.
The EMC series: that the battery and its management system neither emit interference that disrupts nearby equipment nor fail when exposed to it. It matters most where a pack sits beside sensitive electronics - a telecom cabinet next to radio equipment, or a data centre rack.
The UL standard for batteries in stationary applications and in motive auxiliary power, such as material handling and light electric vehicles. It evaluates the pack as a system - cells, enclosure, protection and battery management together - rather than the cell in isolation.
Not a pass-or-fail certificate but a test method: it measures how thermal runaway starts and whether it spreads from cell to module to unit to installation. Fire authorities and insurers use the results to set spacing and suppression requirements, which is why it comes up in energy storage approvals.
Which standard answers which question, and when to ask for it.
| Standard | Covers | Applies to | Ask for it when |
|---|---|---|---|
| UN 38.3 | Transport safety | Every pack | Always — without it a pack cannot ship |
| IEC 62619 | Industrial cell and battery safety | Every pack | Telecom, storage, material handling |
| IEC 61000 | Electromagnetic compatibility | Every pack | Beside radio or sensitive electronics |
| UL 1973 | Stationary and motive battery safety | Every pack | Energy storage, backup, forklifts |
| UL 9540A | Thermal runaway propagation (test method) | Every pack | Storage inside or beside a building |
| ISO 9001:2015 | Quality management | The Noida plant | Vendor registration and audits |
| ISO 14001:2015 | Environmental management | The Noida plant | Supplier sustainability requirements |
| ISO 45001:2018 | Occupational health and safety | The Noida plant | Supplier safety requirements |
How the plant itself is run. These certify the process that produces every pack, not a single product.
The quality management system under which the Noida plant designs, builds and tests packs - documented processes, traceability and corrective action when something goes wrong.
The environmental management system: how the plant controls and reduces its environmental impact, including the handling of materials across the production process.
The occupational health and safety management system for the people building the packs - relevant in a plant working with lithium cells every day.
Most battery suppliers in India describe their compliance in a phrase — “certified”, “approved”, “tested to international standards”. A procurement engineer cannot check a phrase. They can check a standard number against a tender clause, and they can ask for the report behind it.
That is the reason this page names each standard and says what it covers. The one that matters depends on the job: UN 38.3 decides whether a pack can be shipped at all, IEC 62619 and UL 1973 speak to safety in service, UL 9540A is what a fire authority asks about for an energy storage installation, and IEC 61000 is the one to raise when the pack will sit beside radio equipment. Name the standard your tender requires and we will send the report for the pack you are evaluating.
CLN Energy packs are built and tested to UN 38.3 for transport, IEC 62619 for industrial cell and battery safety, IEC 61000 for electromagnetic compatibility, and UL 1973 and UL 9540A for stationary safety and thermal runaway. The Noida plant is certified to ISO 9001:2015 for quality, ISO 14001:2015 for environmental management and ISO 45001:2018 for occupational health and safety. That is eight named standards, where most battery suppliers in India cite one mark or a general phrase. Ask for the test reports on the specific pack you are evaluating - a number on a page is only worth what the report behind it shows.
IEC 62619 is the international safety standard for secondary lithium cells and batteries used in industrial applications, both stationary and motive. It tests the failure modes that cause real incidents in the field: internal short circuit, thermal abuse, overcharge, and whether a fault in one cell propagates to the next. For a telecom tower, a data centre or an energy storage installation it is the most relevant single standard, because those are unattended sites where nobody is present to intervene. It is one of the standards CLN packs are built and tested to.
UL 1973 is a safety standard for batteries in stationary and motive auxiliary power - it evaluates the whole pack as a system, cells, enclosure, protection and battery management together. UL 9540A is different in kind: it is a test method rather than a pass-or-fail certificate, measuring how thermal runaway starts and whether it spreads from cell to module to unit. Fire authorities and insurers use UL 9540A results to set spacing and suppression rules, which is why it comes up in energy storage approvals. CLN packs are built and tested to both.
Because without it the battery cannot legally be transported. UN 38.3 is the set of tests in the UN Manual of Tests and Criteria that a lithium cell or battery must pass before it can move by road, sea or air - altitude simulation, thermal cycling, vibration, shock, external short circuit, impact and overcharge. It is a baseline, not a differentiator on its own, but a supplier who cannot show it is a supplier whose goods may not reach your site. CLN packs are tested to it.
Both cover secondary lithium cells and batteries for industrial use, but they test different things. IEC 62619 is the safety standard - internal short circuit, thermal abuse, overcharge and propagation from cell to cell. IEC 62620 is the performance standard - how capacity, endurance and other ratings are measured and declared. A tender for an unattended site usually asks first about IEC 62619, which is the one CLN packs are built and tested to.
Yes, and you should ask for it for the specific pack rather than accept a company-level statement. Name the model and the standard your specification requires, and we will send the test report for that pack rather than a summary.
Answers to the questions buyers ask before choosing a battery, written from our own specification tables and deployments.
Tell us the pack and the standards your specification names, and we will send the test reports rather than a summary. The certificates are held by CLN Energy, one of the lithium battery manufacturers in India that tests to these standards in its own name.
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