New battery technology — Sodium-ion battery,
sodium-ion battery,

▍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.

Lithium-ion batteries have been widely used as rechargeable batteries since the 1990s due to their high reversible capacity and cycle stability. With the substantial increase in the price of lithium and the increasing demand for lithium and other basic components of lithium-ion batteries, the increasing shortage of upstream raw materials for lithium batteries is forcing us to explore new and cheaper electrochemical systems based on existing abundant elements. Lower-cost sodium-ion batteries are the best option. Sodium- ion battery was almost discovered together with lithium-ion battery, but because of its large ion radius and low capacity, people are more inclined to study lithium electricity, and the research on sodium-ion battery almost stalled. With the rapid growth of electric vehicles and energy storage industry in recent years, the sodium-ion battery, which has been proposed at the same time as lithium-ion battery, has again attracted people’s attention.Lithium, sodium and potassium are all alkali metals in the periodic table of the elements. They have similar physical and chemical properties and can be used as secondary battery materials in theory. Sodium resources are very rich, widely distributed in the Earth’s crust and simple to extract. As a substitute of lithium, sodium has been paid more and more attention in battery field. The battery manufacturers scramble to launch the technology route of sodium-ion battery. Guiding Opinions on Accelerating the Development of New Energy Storage, Scientific and Technological Innovation Plan in the Energy Field during the 14th Five-Year Plan Period, and Implementation Plan for the Development of New Energy Storage during the 14th Five-Year Plan Period issued by the National Development and Reform Commission and the National Energy Administration have mentioned to develop a new generation of high-performance energy storage technologies such as sodium-ion batteries. The Ministry of Industry and Information Technology (MIIT) has also promoted new batteries, such as sodium-ion batteries, as ballast for the development of the new energy industry. Industry standards for sodium-ion batteries are also in the works. It is expected that as the industry increases investment, the technology becomes mature and the industrial chain is gradually improved, the sodium-ion battery with high cost performance is expected to occupy part of the lithium-ion battery market.