A Review of America’s First Step Towards the Harmonization of Portable Battery Standards: UL 62133 – John Copeland, Vice President and COO of Energy Assurance LLC completed a presentation as well as an article on this topic. The presentation was given in August at the Battery Power 2015 show in Denver. The article appeared in Battery Power Magazine and can be accessed at this link. UL 62133 was released in January 2015, and it the first attempt at harmonization of the US battery standards with the existing IEC 62133, second edition. As a new edition of IEC 62133 is expected in the next 1-2 years, additional changes to the UL 62133 standard are expected to follow.