IEC 62133-2 Ed. 1.1 b:2021

IEC 62133-2 Ed. 1.1 b:2021 Secondary cells and batteries containing alkaline or other non-acid electrolytes - Safety requirements for portable sealed secondary lithium cells, and for batteries made from them, for use in portable applications - Part 2: Lithium systems

standard by International Electrotechnical Commission, 07/15/2021