CTIA CRD Amendment Meeting Minute,
CTIA,

▍What is CTIA CERTIFICATION?

CTIA, the abbreviation of Cellular Telecommunications and Internet Association, is a non-profit civic organization established in 1984 for the purpose of guaranteeing benefit of operators, manufacturers and users. CTIA consists of all U.S. operators and manufacturers from mobile radio services, as well as from wireless data services and products. Supported by FCC (Federal Communications Commission) and Congress, CTIA performs a large part of duties and functions that were used to be conducted by the government. In 1991, CTIA created an unbiased, independent and centralized product evaluation and certification system for wireless industry. Under the system, all wireless products in consumer grade shall take compliance tests and those complying with the relevant standards will be granted to utilize CTIA marking and hit store shelves of North American communication market.

CATL (CTIA Authorized Testing Laboratory) represents labs accredited by CTIA for testing and review. Testing reports issued from CATL would be all approved by CTIA. While other testing reports and results from non-CATL will not be recognized or have no access to CTIA. CATL accredited by CTIA varies in industries and certifications. Only CATL which is qualified for battery compliance test and inspection has access to battery certification for compliance to  IEEE1725.

▍CTIA Battery Testing Standards

a) Certification Requirement for Battery system Compliance to IEEE1725— Applicable to Battery Systems with single cell or multiple cells connected in parallel;

b) Certification Requirement for Battery system Compliance to IEEE1625— Applicable to Battery Systems with multiple cells connected in parallel or in both parallel and series;

Warm tips: Select above certification standards properly for batteries used in mobile phones and computers. Do not misuse IEE1725 for batteries in mobile phones or IEEE1625 for batteries in computers.

▍Why MCM？

● Hard Technology: Since 2014, MCM has been attending battery pack conference held by CTIA in US annually, and is able to obtain latest update and understand new policy trends about CTIA in a more prompt, accurate and active way. 

●Qualification: MCM is CATL accredited by CTIA and is qualified to perform all processes related to certification including testing, factory audit and report uploading.

IEEE released IEC 1725-2021 Standard for Rechargeable Batteries for Mobile Phones. CTIA Certifications Battery Compliance Scheme always regards IEEE 1725 as reference standard. After IEEE 1725-2021 released, CTIA establish a working group to discuss IEE 1725-2021 and form their own standard based on it. The working group listened suggestions from labs and manufacturers of batteries, mobile phones, devices, adapters, etc. and hold the first CRD draft discussion meeting. As CATL and a member of CTIA certifications battery scheme working group, MCM raise our advice and attend the meeting.
After three days meeting the working group reaches agreement for the following items:
1. For cells with laminating package, there shall be adequate insulation to prevent shorting through of laminate foil packaging.
2. Further explanation of evaluating cells separator performance.
3. Add a picture to show the position (in the center) of penetrating the pouch cell.
4. The dimension of battery compartment of devices will be more detailed in the new standard.
5. Will add USB-C adapter (9V/5V) data which support fast charging.
6. Amendment of CRD number.
The meeting also answers the question that if batteries pass the test when samples fail after 10 minutes keeping in chamber of 130℃ to 150℃. The performance after 10 min test will not be considered as proof of evaluation, therefore they will pass only if they pass the 10 min test. Most of other safety testing standards have similar testing items, but there’s no explanation if the failure after testing period will influence. The CRD meeting gives us a reference.