The standard dynamic at home and abroad,
UL 1973,

▍What is cTUVus & ETL CERTIFICATION?

OSHA (Occupational Safety and Health Administration), affiliated to US DOL (Department of Labor), demands that all products to be used in workplace must be tested and certificated by NRTL before being sold in market. Applicable testing standards include American National Standards Institute (ANSI) standards; American Society for Testing Material (ASTM) standards, Underwriter Laboratory (UL) standards, and factory mutual-recognition organization standards.

▍OSHA, NRTL, cTUVus, ETL and UL terms definition and relationship

OSHA: Abbreviation of Occupational Safety and Health Administration. It is an affiliation of US DOL (Department of Labor).

NRTL： Abbreviation of Nationally Recognized Testing Laboratory. It is in charge of lab accreditation. Up to now, there are 18 third-party testing institutions approved by NRTL, including TUV, ITS, MET and so forth.

cTUVus： Certification mark of TUVRh in North America.

ETL： Abbreviation of American Electrical Testing Laboratory. It was established in 1896 by Albert Einstein, the American inventor.

UL： Abbreviation of Underwriter Laboratories Inc.

▍Difference between cTUVus, ETL & UL

▍Why MCM?

● Soft Support from qualification and technology: As the witness testing lab of TUVRH and ITS in North American Certification, MCM is able to perform all types of testing and provide better service by exchanging technology face to face.

● Hard support from technology: MCM is equipped with all testing equipment for batteries of big-sized, small-sized and precision projects (i.e. electric mobile car, storage energy, and electronic digital products), able to provide overall battery testing and certification services in North America, covering standards UL2580, UL1973, UL2271, UL1642, UL2054 and so forth.

This month, UL amended UL 1973 by adding nickel-zinc battery requirements and revising some test values for nickel-cadmium batteries and battery systems. The reason is that Appendix H does not include all rechargeable nickel chemicals.Appendix H, originally Alternative Methods for Evaluating Valve-controlled or Vented Lead-acid or Nickel-cadmium Batteries, is now Alternative Methods for Evaluating Valve-controlled or Vented Lead-acid or Nickel-zinc Batteries. The test conditions suitable for nickel-zinc battery are added to the test methods of overcharge, short-circuit, overdischarge, temperature and voltage resistance.
According to The General Office of the State Council’s opinion on deepening the reform of electrical and electronic industry management system: lithium-ion batteries and battery packs used in electrical and electronic products, power banks, and power adapter/charger matched with telecommunication end products, will be included in the compulsory product certification. Below are some news about certification & testing standards involved:The GB/T 35590-2017 General Specification for Portable Power Supply for IT Portable Digital Equipment has been revised. Standards discussion conference will be held on Oct 13, 2022.Further information remains to be obtained as to which standard should be adopted as the certification and testing standard for lithium batteries for electrical appliances products. At present, the most suitable standard for lithium batteries for appliances is SJ/T 11757-2020.