Mandatory Inspection for BESS Lithium Batteries in Taiwan

by  BlidOne

Country: Chinese Taipei - Taiwan
Notification Date: 2026-01-06

Overview

Chinese Taipei's Bureau of Standards, Metrology and Inspection (BSMI) has issued final regulations, G/TBT/N/TPKM/566/Add.1, for mandatory legal inspection of secondary lithium cell blocks, battery packs, and battery systems used in Battery Energy Storage Systems (BESS). This update aims to enhance consumer safety and product quality, introducing specific technical standards and conformity assessment procedures for affected products. The final texts were adopted without changes from the draft version.

Key Details

• Country: Chinese Taipei
• Document Symbol: G/TBT/N/TPKM/566/Add.1
• Notification Date: 2026-01-06
• Comment Deadline: Not specified (final text)
• Effective Date: Phased: July 1, 2026 (for 1-20 kWh systems); July 1, 2027 (for >20-100 kWh systems)

Summary of Changes

The regulation mandates inspection for secondary lithium cell blocks, battery packs, and battery systems for BESS use, specifically for capacities from 1kWh to 100kWh. Products must comply with national standards CNS 62619 (2020 or 2023 editions) and CNS 63056 (2021 edition). These standards encompass safety aspects, including functional safety (referencing IEC 60730-1, IEC 61508, ISO 13849-1/2, UL 991/1998) and specific test protocols. Conformity assessment requires either "Type Approval Batch Inspection" or "Verification Registration," involving type testing and potentially quality management system audits or factory inspections. Certified products must bear the official commodity inspection mark.

Impact Assessment

• Affected products include secondary lithium-ion batteries and systems for BESS applications (1kWh-100kWh) targeting the Chinese Taipei market, impacting manufacturers, importers, and energy storage integrators.
• This creates a new trade barrier, requiring exporters to comply with Chinese Taipei's specific national standards and conformity assessment procedures, potentially increasing costs and lead times.
• Exporters must meet CNS 62619 and CNS 63056 standards and obtain certification (Type Approval or Verification Registration) from BSMI-recognized bodies.
• Non-compliant products will face market access restrictions, making early compliance crucial for businesses seeking to operate in the Chinese Taipei BESS market.

What Businesses Should Do

• Recommended Actions: Identify if your BESS lithium battery products (cells, modules, systems, 1-100kWh) are affected. Obtain and review CNS 62619 and CNS 63056. Initiate Type Approval or Verification Registration processes with BSMI-recognized entities proactively. Ensure your supply chain components also meet these new requirements.
• Compliance Timeline: Mandatory inspection for 1-20 kWh systems begins July 1, 2026. For >20-100 kWh systems, it begins July 1, 2027.
• Resources or Contacts: Engage with the Chinese Taipei Bureau of Standards, Metrology and Inspection (BSMI) or consult with trade compliance experts for detailed guidance and certification support.

Conclusion

Chinese Taipei's new mandatory inspection for BESS lithium batteries signifies a crucial regulatory shift for global manufacturers and exporters. Adhering to CNS standards and navigating the required certification processes is paramount for uninterrupted market access. Businesses should promptly assess their product portfolios and commence necessary conformity assessments to ensure compliance.