International Standards and the Battery Passport

International standards supply the test methods, safety methods and terminology that sit behind many passport entries, but they do not create the passport duty, which comes from Regulation (EU) 2023/1542. A standard can define how a performance test is done, how a safety test is done, or how a battery pack is specified, and a passport entry that cites a standard method is stronger than an entry that states a figure without a method. A reader should therefore distinguish the legal question, which the Regulation answers, from the method question, which a standard answers, and should check both, because a legally required entry with an unstated method is hard to verify, while a well tested battery without a legally required record still lacks a passport.

The scope is the relationship between international standards and the passport, with examples drawn from the ISO and IEC standards for lithium batteries that the sources consulted list. The guide does not state the content of any standard in full, and it does not claim that any particular standard is required by the Regulation. The position is stated as checked on 28 October 2026.

Which standards are relevant to battery passports?

Standards relevant to battery passports include the IEC 62660 series for secondary lithium ion cells for electric road vehicle propulsion, covering performance testing, reliability and abuse testing, and safety requirements, the ISO 12405 series for lithium ion traction battery packs and systems, covering high power, high energy and safety performance, IEC 62619 for safety of secondary lithium cells and batteries for industrial applications, and IEC 62281 for safety of lithium cells and batteries during transport. The list is drawn from the standards reference consulted, and it is illustrative, not exhaustive, because the relevant standard for a particular battery turns on its chemistry, its application and its test purpose. A passport file should name the standard and edition used for each test based entry, rather than citing standards in general.

How do standards relate to Annex XIII entries?

Standards relate to Annex XIII entries as the method behind the entry, where the entry states a performance, durability or safety fact that was measured or assessed by a test. An entry that states a capacity, a cycle life or a safety result should be read with the method that produced it, because the same battery can produce different figures under different methods, and a figure without a method cannot be compared with a figure produced by another method. The Regulation does not, in the summaries consulted, list a single standard for every entry, and the entry should therefore state the method used, whether that method is a standard, a manufacturer method or another recognised method. Method transparency is what makes passport entries comparable across batteries.

What is the difference between a standard and a Regulation requirement?

The difference is that a Regulation requirement is a legal duty, enforceable by market surveillance and subject to conformity assessment, while a standard is a voluntary technical specification that becomes relevant where the Regulation, a delegated act, a harmonised standard citation or a contract calls for it. A battery can comply with a standard without satisfying the Regulation, where the Regulation requires a passport that the standard does not create, and a battery can satisfy the Regulation without citing a particular standard, where the Regulation requires an entry but does not mandate the method. The two should not be conflated, and a file that cites a standard as if it were the Regulation, or cites the Regulation as if it stated a test method, misstates both sources.

What does a standards mapping table look like?

A standards mapping table pairs the passport question with the kind of standard that answers the method question, without claiming that the standard is mandated. The table below uses the standards listed in the sources consulted.

How should a passport file cite standards?

A passport file should cite standards by number, part and edition, with the entry or test to which the standard applies, so that a later reader can check the method without guessing. A general citation to a standards family, without part or edition, is weak, because parts differ in scope and editions differ in method. The citation should sit with the entry it supports, in the technical file or in the passport data file, rather than in a general bibliography that a reader cannot link to a particular figure. A file that cites standards precisely lets a later operator repeat the test, compare the result and judge whether the entry remains valid after a change.

What about standards from other regions?

Standards from other regions, such as US standards, add a further layer to the mapping, because a battery sold in several regions may be tested to several standards, and the passport entries should state which standard produced which figure. A figure produced to a US method should not be presented as if it were produced to an IEC method, and vice versa, because the methods differ and the figures are not directly comparable. The passport file should therefore keep a method register, listing each figure, its method and its standard, so that a reader in any jurisdiction can see the basis of the entry. The register is a data quality practice, and it serves the passport in every jurisdiction.

What limits apply to standards readings?

The limits are that this guide lists standards in general terms and does not state their content or their legal status for any particular battery. This guide gives general educational information only and is not individual legal advice. An operator with a specific battery should check the Regulation text and the relevant standard as checked on 28 October 2026 before acting.