USB-B interface certification will be abolished in new version of CTIA IEEE 1725,
Ieee 1725,

▍What is CB Certification？

IECEE CB is the first genuine international system for mutual recognition of electrical equipment safety test reports. NCB (National Certification Body) reaches a multilateral agreement, which enables manufacturers to obtain national certification from other member countries under CB scheme on the basis of transferring one of the NCB certificates.

CB certificate is a formal CB scheme document issued by authorized NCB, which is to inform other NCB that the tested product samples conform to present standard requirement.

As a kind of standardized report, CB report lists relevant requirements from IEC standard item by item. CB report not only provides results of all required testing, measurement, verification, inspection and assessment with clearness and non-ambiguity, but also including photos, circuit diagram, pictures and product description. According to the rule of CB scheme, CB report will not take effect until it presents with CB certificate together.

▍Why we need CB Certification?

1. Directly recognized or approved by member countries

With CB certificate and CB test report, your products can be exported to some countries directly.

1. Convert to other countries certificates

The CB certificate can be directly converted to the certificate of its member countries, by providing the CB certificate, test report and difference test report (when applicable) without repeating the test, which can shorten the lead time of certification.

1. Ensure the Safety of Product

The CB certification test considers the product’s reasonable use and foreseeable safety when misused. The certified product proves the satisfactory of the safety requirements.

▍Why MCM? 

● Qualification: MCM is the first authorized CBTL of IEC 62133 standard qualification by TUV RH in mainland China.

● Certification and testing capability: MCM is among the first patch of testing and certification third party for IEC62133 standard, and has finished more than 7000 battery IEC62133 testing and CB reports for global clients.

● Technical support: MCM possesses more than 15 technical engineers specialized in testing as per IEC 62133 standard. MCM provides clients with comprehensive, accurate, closed-loop type of technical support and leading-edge information services.

The Cellular Telecommunications Industry Association (CTIA) has a certification scheme covering cells, batteries, adapters and hosts and other products used in wireless communication products (such as cell phones, laptops). Among them, CTIA certification for cells is particularly stringent. Besides the test of general safety performance, CTIA also focuses on the structural design of cells, the key procedures of the production process and its quality control. Although CTIA certification is not mandatory, major telecom operators in North America require their suppliers’ products to pass CTIA certification, therefore CTIA certificate can also be considered as an entry requirement for the North American communications market.CTIA’s certification standard has always referred to IEEE 1725 and IEEE 1625 published by IEEE (Institute of Electrical and Electronics Engineers). Previously, IEEE 1725 applied to batteries without a series structure; while IEEE 1625 applied to batteries with two or more series connections. As CTIA battery certificate program has been using IEEE 1725 as the reference standard, after the issuance of new version of IEEE 1725-2021 in 2021, CTIA has also formed a working group to initiate a program of updating CTIA certification scheme.The working group extensively solicited opinions from laboratories, battery manufacturers, cell phone manufacturers, host manufacturers, adapter manufacturers, etc. In May of this year, the first meeting for CRD (Certification Requirements Document) draft was held. During the period, a special adapter group was set up to discuss the USB interface and other issues separately. After more than half a year, the last seminar was held this month. It confirms that the new certification plan of CTIA IEEE 1725 (CRD) will be issued in December, with a transition period of six months. This means that CTIA certification must be performed using the new version of the CRD document after June 2023. We, MCM, as a member of CTIA’s Test Laboratory (CATL), and CTIA’s Battery Working Group, proposed revisions to the new test plan and participated throughout the CTIA IEEE1725-2021 CRD discussions. The following are the important revisions:Requirements for battery/pack subsystem was added, products need to meet standard either UL 2054 or UL 62133-2 or IEC 62133-2 (with US deviation). It is worth noting that previously there is no need to provide any documents for pack.