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What are the certification standards for energy storage battery packs?

储能电池PACK认证标准有哪些：结论——五环节看储能电池PACK认证标准（标准、认证、市场、测试、趋势）→标准——欧盟固定式储能按EN IEC 62619认证（WTO/FTA咨询网）→认证——北美储能电池按UL 1973认证（UL）→市场——中国按GB/T 36276认证（国家标准委）→测试——IEC 62619含过充外短路热失控传播测试（bess.courses）→趋势——2026年起工业电池需数字电池护照（ESTL）

What are the certification standards for energy storage battery packs?

I. Standards

What to look for in standards.
Regarding standards, the landscape is as follows: EN IEC 62619:2022—WTO/FTA Advisory Network (Mandatory elements and schemes under the new EU Battery Regulation; safety regulatory clauses for stationary battery energy storage systems; implementation based on EN IEC 62619:2022, EN IEC 63056:2020, UN 38.3:2023, UL 1973:2022, UL 9540A:2019; WTO/FTA); GB/T 36276-2023—SAC (National Standard: Lithium-ion battery for electrical energy storage; current status: active; release year: 2023; SAC); GB 44240-2024—CQC (Safety certification rules CQC13-464220-2025 for lithium secondary cells and battery packs for electrical energy storage; GB 44240-2024 applies to battery cells; battery capacity testing required annually; CQC); IEC 62619:2022—ESTL (IEC 62619 Safety Certification for Energy Storage Batteries; EU: IEC 62619 plus EU Battery Regulation 2023/1542; China: GB/T 36276-2023; USA: IEC 62619 plus UL 9540/UL 9540A; International: CB Scheme IEC 62619:2022 CB Certificate; ESTL); UL 1973—SunLith (US safety standard for stationary and motive auxiliary power batteries; regional equivalent for the US market; global suppliers often hold both UL 1973 and IEC 62619; SunLith); GB/T
36276—CQC (Certification Rules CQC13-464225-2024 for Lithium-ion Batteries for Electric Energy Storage; 11 battery modules, 1 battery cluster; CQC)—Standards to consider: EN IEC 62619, GB/T 36276, GB 44240, IEC 62619:2022, UL 1973, and GB/T 36276; all six standards are addressed.

II.
Certification

What to look for in certification.
In terms of certification practice, here are the key standards to consider: IEC 62619 (an international safety standard covering both cells and systems; unlike UN38.3, which focuses on transport safety, IEC 62619 evaluates operational safety); UL 1973 (covering batteries for stationary and motive auxiliary power applications, including modules and battery systems); UL 9540 (the standard for Energy Storage Systems [ESS] and equipment, addressing electrical, electrochemical, mechanical, and other aspects); IEC 63056 (safety rules for secondary lithium batteries in ESS; a companion standard rather than a substitute, often required alongside others); UL 9540A (test method for evaluating thermal runaway fire propagation, aimed at preventing fire hazards caused by ESS); and GB 31241 (mandatory certification for lithium-ion batteries and packs used in mobile power supplies). These six standards—IEC 62619, UL 1973, UL 9540, IEC 63056, UL 9540A, and GB 31241—represent the essential certification requirements.

III.
Market

What to look for in the market.
Market practices indicate the following requirements: EU—A&S Power (CE Mark covering LVD, EMC, RoHS, and IEC 62619; compliance with EU Battery Regulation 2023/1542, phasing in from 2027 to 2031); North America—A&S Power (UL 1973 for battery safety, UL 9540 for system safety, and UL 9540A for fire propagation testing); USA—ESTL (UL certifications have become the *de facto* safety standard; jurisdictions like New York and Chicago enforce a “no UL, no sale” policy); China—ESTL (New CCC regulations taking effect on August 15, 2025, utilizing a Type Test model); EU—Guangdong Energy Storage Testing (CE certification including EN/IEC 62660-1-2-3 for lithium-based traction battery cells; EN/IEC 62619 and EN/IEC 62620 for performance requirements of industrial energy storage cells/systems; EN/IEC 60730 Annex H for BMS functional safety assessment); International—ESTL (CB Scheme certification under IEC 62619:2022). These six perspectives—EU, North America, USA, China, EU, and International—provide a comprehensive overview of market requirements.

IV.
Testing

What to look for in testing.
Based on testing practices, the key aspects to consider are: Overcharge (IEC 62619 defines type tests for overcharge, external short circuit, thermal abuse, forced internal short circuit, and battery-system thermal-runaway propagation); External Short Circuit (type tests including external short circuit); Thermal Abuse (thermal abuse test involving an oven hold—commonly at 85°C—to demonstrate controlled failure); Thermal Runaway (IEC 62619:2022 added mandatory thermal runaway propagation testing, formal BMS safety analysis, EMC testing, and overcurrent protection checks); Samples (EU safety requirements for stationary battery energy storage systems: 3 battery packs and 10 cells); and BMS (BMS functional safety documentation covering fault detection response times and fail-safe behavior—required for all projects regardless of the target market). In summary, the testing covers six critical areas: overcharge, external short circuit, thermal abuse, thermal runaway, samples, and BMS.

V.
Trends

What to look for regarding trends.
Regarding industry trends, the outlook covers six key areas: Passports—ESTL (starting in 2026, industrial batteries exceeding 2kWh require a unique digital battery passport containing data on chemistry, manufacturing, and carbon footprint); Regulations—WTO/FTA Advisory Network (mandatory implementation of the new EU Battery Regulation, phased rollout from 2027 to 2031); “No UL, No Sale”—ESTL (New York and Chicago enforcing “no UL, no sale” policies with increased penalties by 2026); CCC—ESTL (new CCC rules taking effect on August 15, 2025, for the Chinese market); Mandatory Requirements—CNCA (CNCA-C09-02:2026 Mandatory Product Certification Catalogue covering lithium-ion batteries and packs for power banks); and Exports—ESTL (GB/T 42288-2022 safety specifications for energy storage stations serving as the basis for on-site inspections; IEC 62619:2022 as an international export reference; UL 1973 for North American market access). These six perspectives—passports, regulations, “no UL, no sale,” CCC, mandatory requirements, and exports—provide a comprehensive view of the trends.

Conclusion

What are the certification standards for energy storage battery packs?
The conclusion is that these standards should be viewed through five key dimensions: standards, certification, market, testing, and trends.
Standards—WTO/FTA Consulting Network (EU stationary energy storage certified to EN IEC 62619:2022), SAC (China GB/T 36276-2023 for lithium-ion batteries for electric energy storage), CQC (GB 44240-2024 applicable to battery cells), ESTL (IEC 62619:2022 CB certificate for international acceptance), SunLith (UL 1973 equivalent standard for North America), CQC (CQC13-464225-2024 certification for battery modules and clusters); Certifications—BSLBATT (IEC 62619 covering cells and systems), UL (UL 1973 for stationary and auxiliary vehicle power module battery systems), UL Solutions (UL 9540 standard for energy storage system equipment), SunLith (IEC 63056 supporting standard), MCM (UL 9540A thermal runaway propagation test), CNCA (GB 31241 mandatory certification for portable power banks); Markets—A&S Power (Europe CE plus IEC 62619), A&S Power (North America UL 1973

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