CATL

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A global manufacturer of lithium-ion batteries, battery systems and energy-storage technologies.

Last updated November 4, 2026

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First read: Nov 3, 2026
Latest read: Nov 4, 2026

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Overview

Contemporary Amperex Technology Co., Limited, generally known as CATL, is a Chinese battery technology and manufacturing company headquartered in Ningde, Fujian. Its principal businesses are lithium-ion batteries for electric vehicles, battery-management systems, stationary energy-storage systems and related technologies. The company serves vehicle manufacturers, commercial-vehicle producers, energy companies and other industrial customers in China and international markets. CATL developed from the electric-vehicle battery operations of Amperex Technology Limited, or ATL. ATL was established by Robin Zeng in 1999 to make batteries for portable electronics using licensed technology and was acquired by Japan’s TDK in 2005. As Chinese policy began supporting electric vehicles, ATL created an electric-vehicle battery research and development operation. In 2011, Zeng and other Chinese investors separated that activity from ATL and established CATL; TDK initially retained a minority interest before exiting in 2015. The company’s early automotive relationship with BMW Brilliance, established in 2012, helped CATL build experience as an automotive-grade supplier. It expanded during the rapid growth of China’s electric-vehicle industry and subsequently won supply relationships with international vehicle manufacturers including BMW, Daimler, Ford, Honda, Hyundai, Tesla, Toyota, Volkswagen and Volvo, as well as Chinese manufacturers such as Geely, GAC, Li Auto, NIO, SAIC and XPeng. CATL’s competitive position has been associated with large-scale manufacturing, extensive research activity, lithium iron phosphate expertise, cell-to-pack engineering and close integration with vehicle-platform development. CATL listed on the Shenzhen Stock Exchange in 2018. It has since expanded its manufacturing and engineering footprint beyond China, including a plant in Arnstadt, Germany, projects in Hungary, Indonesia and Spain, and research and partnership activities in other regions. Its manufacturing network covers multiple Chinese locations as well as facilities in Germany, Hungary, Indonesia and Spain. The company has also invested in battery materials, recycling, international joint ventures and supply-chain capabilities. Its technology portfolio includes lithium iron phosphate and other lithium-ion chemistries, high-energy-density automotive cells, fast-charging products, battery packs, battery-management systems and stationary storage. CATL introduced a sodium-ion battery for automotive use in 2021 and later announced products such as M3P, Shenxing and Tener. The company has emphasized faster charging, improved safety, greater pack-level energy density, reduced inactive material and longer service life. CATL is one of the largest battery suppliers in the world. Its scale and importance have also made it the subject of geopolitical scrutiny. U.S. officials and lawmakers have raised concerns about supply-chain dependence, military links, data or espionage risks and alleged forced-labor exposure. CATL has rejected such allegations as false or groundless and stated that it complies with applicable laws. In 2024, a U.S. defense-spending law restricted certain defense funding involving the company, and in January 2025 the U.S. Department of Defense listed CATL as a Chinese military company. These controversies have affected discussion of CATL’s U.S. partnerships and international expansion, but the company remains active in global automotive and energy-storage markets.

History

CATL’s history is rooted in Amperex Technology Limited, a battery company founded by Robin Zeng in 1999 for portable-electronics applications. ATL used licensed technology and became part of Japan’s TDK group in 2005, while Zeng continued in management. When China began building an electric-vehicle industry through subsidies and industrial policy, ATL established an electric-vehicle battery research operation. In 2011, Zeng, vice-chairman Huang Shilin and Chinese investors separated the electric-vehicle battery business from ATL and created Contemporary Amperex Technology. The name refers to Ningde, the Fujian city where the company was founded and where its principal manufacturing base developed. TDK retained a minority stake until 2015. CATL’s early strategic choices combined Japanese manufacturing discipline with practices associated with large Chinese technology companies and emphasized battery research, production scale and relationships with vehicle makers. A cooperation with BMW Brilliance in 2012 gave CATL an important early automotive customer. During the following years, the rapid growth of China’s electric-vehicle market allowed the company to expand production and improve its position against Panasonic, BYD and Korean battery producers. By 2016 it was among the world’s largest suppliers of batteries for electric, hybrid and plug-in hybrid vehicles. In 2017, its power-battery-system sales reached 11.84 GWh and it became the leading global supplier by that measure. CATL also began international partnerships, including a 2017 strategic relationship with Valmet Automotive and a minority investment in that company. CATL became a public company in Shenzhen in June 2018. That year BMW announced a multibillion-euro battery-supply agreement, and CATL announced its first European battery factory in Arnstadt, Thuringia. The company continued investing in cell-to-pack design, lithium iron phosphate chemistry and manufacturing automation. In 2020, its chairman publicized a battery designed for approximately one million miles of vehicle use. In 2021, CATL presented sodium-ion technology for automotive applications and invested in cobalt resources, including a stake in the Kisanfu mine in the Democratic Republic of the Congo. The 2020s brought further internationalization and product diversification. CATL announced its Debrecen, Hungary, project in 2022 and described its Yibin plant as the world’s first zero-carbon battery factory. It expanded cooperation with Ford and VinFast, and in 2023 introduced M3P and Shenxing battery platforms. Shenxing focused on high-rate charging and cold-weather performance, while M3P sought greater energy density than conventional LFP at a potentially different material profile. CATL has also moved beyond vehicle batteries into large-scale stationary storage. In 2024 it announced Tener, a modular system designed around high capacity, safety engineering and reduced degradation. The company announced research cooperation with Hong Kong Science and Technology Parks Corporation and continued planning for facilities and joint ventures in Europe and Asia, including the proposed Stellantis partnership in Spain. CATL’s scale has brought both industrial influence and political controversy. Its batteries are used by numerous global automakers, but U.S. officials have questioned Chinese involvement in critical infrastructure, military procurement and battery supply chains. Security concerns led Duke Energy to disconnect CATL batteries at Marine Corps Base Camp Lejeune in 2023, while the 2024 National Defense Authorization Act restricted certain U.S. defense funding connected with CATL products. Lawmakers also raised allegations related to forced labor and import controls; CATL called these allegations false or groundless. In January 2025, the U.S. Department of Defense placed CATL on its Chinese military-company list. Despite these disputes, CATL remains an active global supplier and continues to expand its battery, storage, research and international manufacturing businesses.

2025
Hong Kong listing application and U.S. designation
[1]CATL - Wikipediaen.wikipedia.org
CATL filed for a Hong Kong secondary listing, while the U.S. Department of Defense added it to a Chinese military-company list.
2024
Tener stationary storage system announced
[1]CATL - Wikipediaen.wikipedia.org
CATL introduced a large-scale energy-storage system based on high capacity and degradation-control technologies.
2023
M3P and Shenxing platforms introduced
[1]CATL - Wikipediaen.wikipedia.org
CATL expanded its automotive portfolio with new energy-density and fast-charging platforms.
2022
Hungarian plant announced
[1]CATL - Wikipediaen.wikipedia.org
CATL announced a major European battery project in Debrecen.
2021
Sodium-ion battery unveiled
[1]CATL - Wikipediaen.wikipedia.org
CATL presented sodium-ion technology for automotive use.
2018
Shenzhen listing and German expansion
[1]CATL - Wikipediaen.wikipedia.org
CATL listed on the Shenzhen Stock Exchange and announced a battery plant in Germany.
2017
CATL becomes the leading battery supplier
[1]CATL - Wikipediaen.wikipedia.org
Power-battery-system sales reached 11.84 GWh, putting CATL first globally by that measure.
2012
BMW Brilliance cooperation begins
[1]CATL - Wikipediaen.wikipedia.org
BMW Brilliance became CATL’s first major automotive customer.
2011
CATL is established
[1]CATL - Wikipediaen.wikipedia.org
The electric-vehicle battery operation was separated from ATL and established as CATL in Ningde.
2005
TDK acquires ATL
[1]CATL - Wikipediaen.wikipedia.org
Japan’s TDK acquired ATL while Zeng continued to manage the business.
1999
Amperex Technology Limited is founded
[1]CATL - Wikipediaen.wikipedia.org
Robin Zeng founded ATL, the portable-electronics battery business from which CATL later developed.

Products and positioning

Global battery-technology and manufacturing leader focused on scale, safety, fast charging, energy density and integrated electrification solutions.

Automotive batteries · 2011
Electric-vehicle battery systems
CATL supplies battery cells, modules and integrated packs for passenger cars, buses, trucks and other electric vehicles. Its portfolio includes lithium iron phosphate and other lithium-ion chemistries, with engineering focused on safety, cycle life, charging speed, pack integration and energy density. Customers include Chinese and international vehicle manufacturers.
Automotive batteries
Qilin battery
Qilin is a high-integration battery-pack platform associated with CATL’s cell-to-pack approach. By reducing inactive components and improving use of pack volume, the design is intended to increase vehicle range and packaging efficiency while retaining automotive safety and thermal-management systems.
Automotive batteries · 2023
Shenxing
Shenxing is a lithium iron phosphate battery platform designed around rapid charging. CATL describes its electrode, electrolyte, separator and monitoring technologies as improving ion transport, charging response, low-temperature performance and safety. It is positioned for mass-market electric vehicles requiring shorter charging stops.
Automotive batteries · 2023
M3P battery
M3P is a CATL battery chemistry positioned to provide higher energy density than conventional lithium iron phosphate while using a modified material composition. CATL reported an energy density of up to 210 Wh/kg for the product as described in 2023.
Automotive batteries · 2021
Sodium-ion batteries
CATL’s sodium-ion program explores a battery chemistry that reduces dependence on some lithium-based materials. The company unveiled an automotive-oriented sodium-ion battery in 2021 and has presented it as a potential option for vehicles and applications where cost, supply resilience and low-temperature behavior are important.
Stationary energy storage · 2024
Tener
Tener is a large-scale stationary energy-storage system announced in 2024. CATL described each unit as having 6.25 MWh of capacity and highlighted safety engineering, biomimetic solid-electrolyte-interphase technology, self-assembled electrolyte technology and five-year zero-degradation claims.
Battery electronics · 2011
Battery-management systems
CATL develops battery-management systems that monitor cells and packs, control charging and discharging, support thermal management and provide fault detection. These systems are part of the company’s broader effort to integrate cells, electronics, software and vehicle or storage applications.

Controversies

2025
U.S. Department of Defense designation
The U.S. Department of Defense added CATL to its list of Chinese military companies. The designation intensified political scrutiny of CATL’s access to U.S. government business and financial relationships.
Source
2024
U.S. scrutiny over alleged forced-labor exposure
U.S. lawmakers asked the Department of Homeland Security to consider CATL in relation to import restrictions under the Uyghur Forced Labor Prevention Act. CATL said the allegations were unfounded and that it complied with applicable laws.
Source
2023
Security concerns over CATL batteries at a U.S. Marine base
Duke Energy disconnected CATL batteries at Marine Corps Base Camp Lejeune after security concerns were raised. CATL rejected claims that its batteries posed espionage risks and called the allegations misleading.
Source
2022
CATL sues Honeycomb Energy over alleged unfair competition
In February 2022, CATL filed a lawsuit against Honeycomb Energy alleging unfair competition. The case was reported as scheduled to be heard later that month. The source does not report a determination or outcome in this lawsuit. The report identifies the parties and the nature of the claim but provides no further details on the allegations, the relief sought, or the court's findings.
Source
2021
Explosion at Brunp recycling plant
An explosion occurred at a workshop of Brunp Recycling Technology in Hunan, killing one person and severely injuring six others. CATL, the parent company, stated that the incident had a limited impact on its operations. Brunp was investigating the cause of the explosion at the time of the report.
Source
2021
Explosion and fire at Hunan Brunp factory
On January 7, 2021, an explosion and fire occurred in a workshop at the old factory of Hunan Brunp Recycling Technology. CATL stated that the impact of the incident on its production and operations was preliminarily assessed as limited. The company also said that Hunan Brunp was cooperating with the relevant authorities in their investigation into the cause of the incident. No further details on casualties, damage, or the outcome of the investigation were provided in the source.
Source
2021
Court rules in CATL patent infringement case
A court found that Jiangsu Tafel New Energy Technology Co., Ltd. and Dongguan Tafel New Energy Technology Co., Ltd. jointly infringed CATL's utility model patent and ordered them to jointly compensate CATL for economic losses and reasonable expenses.
Source
2021
CATL sues CALB over alleged patent infringement
CATL formally sued CALB for alleged patent infringement; a source cited in the report said the alleged infringement covered CALB's full product range. The report does not provide a court determination.
Source
2020
CATL files patent lawsuit against Tafel
CATL said it filed a lawsuit against Tafel with the Fujian High People's Court over alleged infringement of intellectual property related to an explosion-proof valve patent. The case was accepted in early January, and the amount in dispute was RMB 120 million.
Source

2025
Pursue a Hong Kong secondary listingM&A
Background
CATL sought additional capital to support international projects and expansion.
Action taken
The company filed for a secondary listing on the Hong Kong Stock Exchange.
Aftermath
The filing was presented as a way to fund international growth, including projects in Hungary, Spain and Indonesia.
Source
2024
Enter the next phase of stationary storageProduct launch
Background
Grid operators and renewable-energy developers require larger, safer and more predictable storage systems.
Action taken
CATL announced Tener, a 6.25 MWh-class stationary storage product with claimed five-year zero degradation and integrated safety technologies.
Aftermath
The product strengthened CATL’s positioning beyond vehicle batteries and into utility-scale energy infrastructure.
Source
2023
Launch the Shenxing fast-charging platformProduct launch
Background
Charging time is a major barrier to the wider adoption of electric vehicles, particularly in mass-market segments.
Action taken
CATL introduced Shenxing, an LFP platform using electrode, electrolyte, separator and monitoring improvements to support rapid charging and low-temperature operation.
Aftermath
The platform reinforced CATL’s emphasis on affordable batteries with improved charging convenience and safety.
Source
2022
Expand manufacturing in EuropeStrategy
Background
Automotive customers and European governments were seeking regional battery production.
Action taken
CATL announced a large battery plant in Debrecen, Hungary.
Aftermath
The project strengthened CATL’s planned European manufacturing network alongside its German operations.
Source
2021
Develop sodium-ion automotive batteriesProduct launch
Background
Battery makers were seeking alternative chemistries to manage material costs and supply-chain exposure.
Action taken
CATL unveiled an automotive sodium-ion battery and continued work on recycling and battery materials.
Aftermath
The announcement broadened CATL’s chemistry portfolio beyond conventional lithium-ion products.
Source
2018
Build a European manufacturing footprintStrategy
Background
European automakers were increasing their electric-vehicle programs and seeking localized battery supply.
Action taken
CATL announced a battery factory in Arnstadt, Germany, and expanded relationships with European vehicle manufacturers.
Aftermath
The German project became the foundation of CATL’s European production presence.
Source
2011
Separate the electric-vehicle battery business from ATLStrategy
Background
The growth of China’s electric-vehicle market and government support made automotive batteries strategically distinct from ATL’s portable-electronics business.
Action taken
Robin Zeng and Chinese investors established CATL as a separate company focused on electric-vehicle batteries.
Aftermath
The separation created the corporate platform that later became one of the world’s largest EV-battery suppliers.
Source

Recent events

2026.11.02
Reported2026.11.02
CATL and Blue Vector announce strategic cooperation[13]宁德时代与蓝色向量宣布战略合作finance.sina.com.cn
CATL and Blue Vector announced that they signed strategic and product cooperation agreements. CATL will custom-develop aviation power batteries for Blue Vector’s SKYLA V30, and Blue Vector selected CATL as its exclusive battery partner. The companies also plan to cooperate on technology innovation, research, standards, market development and operations.
Unconfirmed
CATL signs three Australian energy cooperation MoUs[14]宁德时代与三方签署澳大利亚能源合作谅解备忘录finance.eastmoney.com
CATL signed cooperation memoranda of understanding with Hitachi Energy, EPEC Group, and the University of New South Wales covering grid connection for large-scale energy storage projects, system integration, and professional training. The EPEC cooperation covers engineering delivery and system validation; the parties also plan to build a renewable-energy training and innovation center in western Sydney with the University of New South Wales.
2026.10.29
Reported2026.10.29
CATL and Hitachi Energy sign partnership MoU[15]宁德时代与日立能源签署合作谅解备忘录prnewswire.com
CATL signed an MoU with Hitachi Energy. Their DC battery products and Hitachi Energy's power conversion systems are intended to form the basis of a proposed integrated offering in Australia and the Asia Pacific region.
2026.10.29
Reported2026.10.29
CATL and UNSW Sydney agree to develop renewable energy training centre[15]宁德时代与日立能源签署合作谅解备忘录prnewswire.com
CATL and UNSW Sydney signed an MoU and will jointly develop the Centre for Integrated Renewable Energy Training and Innovation in Western Sydney, New South Wales.
2026.10.29
Reported2026.10.29
CATL signs collaboration MoU with EPEC Group[15]宁德时代与日立能源签署合作谅解备忘录prnewswire.com
CATL signed an MoU with EPEC Group. CATL will collaborate with EPEC Group and ESVL, combining CATL's energy storage technology with EPEC's grid integration and engineering delivery expertise and ESVL's full-scale system validation.
2026.10.29
Reported2026.10.29
CATL launches TENER+ energy storage system[15]宁德时代与日立能源签署合作谅解备忘录prnewswire.com
CATL unveiled TENER+ in a global launch at All Energy Australia 2026. The system is described as a 9MWh ultra-high-capacity energy storage system.
Unconfirmed
Reported2026.10.22
DeepSeek raises approximately RMB 100 billion[16]DeepSeek融资约1000亿元zaobao.com.sg
Bloomberg reported that DeepSeek raised approximately RMB 100 billion in a new funding round, with CATL and Tencent among the largest investors.
Unconfirmed
Reported2026.10.21
Yinwang, CATL and Times Electric Service sign strategic cooperation framework agreement[17]引望、宁德时代与时代电服签署战略合作框架协议finance.sina.com.cn
Yinwang, CATL and Times Electric Service formally signed a strategic cooperation framework agreement focused on building a smart battery-swap ecosystem and developing an automated energy replenishment experience.
2026.10.20
Reported2026.10.20
CATL launches Tianxing II heavy-truck battery[18]宁德时代发布天行II重卡电池finance.sina.com.cn
CATL launched its Tianxing II heavy-truck battery in five versions. The electric-electric range-extender version was described as entering mass production upon launch, with 13,000 units signed for initial deployment.
Unconfirmed
Reported2026.10.14
DeepSeek's second funding round nears completion with proposed raise increased to about 100 billion yuan[19]DeepSeek第二轮融资临近完成拟募资增至约1000亿元163.com
DeepSeek's second funding round is nearing completion; the proposed raise has been increased from 50 billion yuan to about 100 billion yuan while the pre-money valuation remains about 500 billion yuan. New and existing shareholders are each proposed to invest about half; new investors include Shixi Capital (石溪资本), Zhongxin Juyuan (中芯聚源), CPE Yuanfeng (CPE 源峰), Legend Capital (君联资本) and Geely (吉利), while existing shareholders including CATL (宁德时代) and Tencent (腾讯) continue to participate.

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