UL 80079-20-1

Explosive Atmospheres – Part 20-1: Material Characteristics for Gas and Vapour Classification – Test Methods and Data
standard by Underwriters Laboratories, 06/02/2020

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