2017NEMA C18.1M PART 2-2017 Portable Primary Cells and Batteries with Aqueous Electrolyte — Safety Standard
2011NEMA C18.1M PART 2-2011 Portable Primary Cells and Batteries with Aqueous Electrolyte- Safety Standard
2003NEMA C18.1M PART 2-2003 American National Standard for Portable Primary Cells and Batteries with Aqueous ElectrolyteSafety Standard
1999NEMA C18.1M PART 2-1999 Portable Primary Cells and Batteries with Aqueous Electrolyte - Safety Standard (Together with C18.1M Part 1 Supersedes c18.1M-1992)