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February 2023 Regulatory Update

China: Safety Technical Specification for Lithium-ion Cells and Batteries Used in Portable Electronic Equipment



Standard GB 31241-2022 for Lithium- ion cells/batteries used in portable electronic equipment was published by the China Standardization Administration (SAC) and the China's Ministry of Information and Industry Technology (MIIT) as a revision for GB 31241-2014 on 29 December 2022; it will enter into force on 1 January 2024.

The lithium-ion cells or batteries used in the following portable electronic equipment product categories fall into the GB31241-2022 scope: portable office products, portable telecommunication products, portable audio/video products and other portable products like Global Positioning System (GPS) devices, electric books, power banks, etc.

This standard focuses on the basic safety requirements to protect people from personal injury, property damage and other damage. Performance and functional characteristics of portable electronic equipment containing these cells/batteries are not covered.

Leakage, fire, explosion, and overheating hazards were considered and taken as assessment criteria for safety requirements. Tests methods for intended use, reasonably foreseeable misuse and fault conditions were also given in this standard as below:

  • Electrical safety tests for cell
  • Environmental safety tests for cell
  • Environmental safety tests for battery
  • Electrical safety tests for battery
  • Safety requirements of battery protective circuits
  • Safety requirements of system protective circuits
  • Consistency requirements

Through this standard, so that designers can understand the basic principles for designing cells and batteries, the following criteria are to be considered:

  • Select materials with high safety performance, and try to avoid using materials that are prone to thermal runaway
  • Involve protective devices to reduce or eliminate the possibility of danger
  • Take measures to identify and explain potential hazards

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