UL 62133-1
Standard for Safety for Secondary Cells and Batteries Containing Alkaline or Other Non-Acid Electrolytes – Safety Requirements for Portable Sealed Secondary Cells, and for Batteries Made from Them, for Use in Portable Applications – Part 1: Nickel Systems
standard by Underwriters Laboratories, 01/10/2020
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UL 80079-20-2
Explosive Atmospheres – Part 20-2: Material Characteristics – Combustible Dusts Test Methods
standard by Underwriters Laboratories, 05/11/2020
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