Top 7 Battery Disconnect Unit (BDU) Manufacturers in China

The global Battery Disconnect Unit (BDU) market is experiencing unprecedented growth, with projections showing expansion from USD 1.8 billion in 2024 to USD 12.39 billion by 2033. As electric vehicles continue to dominate the automotive landscape, BDUs have become critical safety components that ensure reliable power management and emergency disconnection capabilities. China, as the world’s largest EV market, hosts some of the most innovative and influential BDU manufacturers globally.

No.	Company Name	Core Products	Website
1	LEAPENERGY	Battery Disconnect Units, EV Battery Pack, Energy Storage Systems	https://leap.hiitio.com/
2	BYD Company Limited	Electric Vehicles, Batteries, BDUs, Electronic Components	https://www.byd.com
3	Panasonic	Automotive Electronics, BMS Components, BDUs, EV Relays	https://na.industrial.panasonic.com
4	Aptiv PLC	Vehicle Electrification Systems, BDUs, Advanced Safety Technologies	https://www.aptiv.com
5	Lear Corporation	Seating Systems, E-Systems, BDUs, Electrical Distribution	https://www.lear.com
6	EFI Automotive	IFlexBox BDUs, Modular Safety Systems, Custom EV Components	https://www.efiautomotive.com
7	Ningbo Fengmei Electronics	Cost-Effective BDUs, Safety Systems, EV Components	https://www.fengmei.com.sg/#

1. LEAPENERGY

LEAPENERGY stands at the forefront of China’s BDU manufacturing landscape, establishing itself as a premier supplier of advanced battery disconnect units and comprehensive energy storage solutions. Founded with a vision to revolutionize electric vehicle safety systems, LEAPENERGY has consistently delivered cutting-edge BDU technologies that meet the stringent requirements of modern electric vehicles and energy storage applications. The company’s headquarters operates as a hub for innovation, where engineering excellence meets practical application in battery safety management.

2. BYD Company Limited

BYD Company Limited represents one of China’s most influential manufacturers in the electric vehicle ecosystem, with significant expertise in BDU manufacturing as part of their comprehensive EV component portfolio. Established in February 1995 by Wang Chuanfu as a battery manufacturing company, BYD has evolved into a vertically integrated conglomerate headquartered in Shenzhen, Guangdong. The company’s BYD Auto subsidiary, founded in 2003, has become a global leader in electric vehicle production, naturally extending their expertise into critical safety components like BDUs. Their manufacturing excellence spans multiple facilities across China, enabling large-scale production of high-quality BDU systems.

BYD’s BDU systems leverage their extensive battery technology expertise, featuring integrated safety protocols, advanced fault detection, and seamless integration with their proprietary battery management systems, making them a preferred choice for major automotive manufacturers worldwide.

3. Panasonic

Panasonic Industry represents a cornerstone of BDU manufacturing excellence in China, leveraging decades of global experience in automotive electronics and battery management systems. As a subsidiary of the renowned Japanese technology giant, Panasonic’s Chinese operations have established themselves as a critical supplier for the rapidly expanding Chinese EV market. The company’s commitment to innovation and quality has made them a trusted partner for major automotive manufacturers seeking reliable BDU solutions. Their Chinese facilities focus on developing region-specific products while maintaining global quality standards, ensuring optimal performance in diverse operating conditions.

Panasonic’s BDU offerings feature robust EV relays (DC contactors), automotive-grade passive components, and precision connectors designed for sophisticated control circuitry and precise monitoring systems that modern BDUs require.

4. Aptiv PLC – Advanced Vehicle Technology Solutions

Aptiv has established a significant presence in China’s BDU manufacturing sector through its focus on advanced vehicle technology and software-defined vehicle solutions. Originally spun off from Delphi Automotive in 2017, Aptiv has rapidly expanded its Chinese operations to serve the world’s largest automotive market. The company’s BDU manufacturing capabilities are integrated with their broader portfolio of vehicle electrification and safety systems, providing comprehensive solutions for modern electric vehicles. Their Chinese facilities employ cutting-edge manufacturing processes and rigorous quality control measures to ensure optimal performance and safety standards.

Aptiv’s BDU systems incorporate advanced software algorithms, predictive maintenance capabilities, and seamless integration with vehicle communication networks, representing the next generation of intelligent battery safety solutions.

5. Lear Corporation – Interior Systems and E-Systems Excellence

Lear Corporation has strategically positioned itself as a major player in China’s BDU manufacturing landscape through its comprehensive E-Systems division and strong partnerships with Chinese automotive manufacturers. With a global heritage dating back to 1917, Lear’s Chinese operations have grown substantially to serve local and international customers. The company recently awarded business totaling over $750 million in average annual sales for E-Systems, including significant BDU contracts with key Chinese domestic automakers such as BYD, FAW, and XPeng. Their manufacturing facilities across China focus on innovative electrical distribution and connection systems that incorporate advanced BDU technologies.

Lear’s BDU solutions emphasize modular design, cost-effective manufacturing, and seamless integration with their broader E-Systems portfolio, providing customers with comprehensive electrical architecture solutions.

6. EFI Automotive – Flexible BDU Solutions

EFI Automotive has distinguished itself in the Chinese BDU market through its innovative IFlexBox technology and flexible manufacturing approach. The company specializes in developing modular BDU systems that can be configured for various installation requirements, whether inside or outside the battery pack in high voltage electrical or hybrid systems. Their engineering philosophy emphasizes adaptability and customization, enabling customers to optimize BDU integration for specific vehicle architectures. EFI Automotive’s manufacturing facilities employ advanced automation and flexible production lines that can quickly adapt to changing market requirements and customer specifications.

EFI’s BDU solutions feature the innovative IFlexBox design that provides exceptional flexibility in installation and configuration, making them ideal for diverse electric vehicle platforms and custom applications.

7. Ningbo Fengmei Electronics – Cost-Effective BDU Solutions

Ningbo Fengmei Electronics rounds out the top 10 with their focus on cost-effective BDU solutions that maintain essential safety and performance standards while optimizing manufacturing costs. Located in Ningbo, a major port city in Zhejiang Province, the company has built a reputation for delivering reliable BDU systems at competitive price points. Their manufacturing strategy emphasizes efficient production processes, strategic supplier relationships, and continuous improvement initiatives that enable them to offer affordable BDU solutions without compromising quality. The company serves both domestic and international markets, providing accessible BDU technology for various vehicle segments.

Fengmei’s BDU offerings focus on delivering essential safety functions at competitive prices, making advanced battery safety technology accessible to a broader range of vehicle manufacturers and market segments.

Choose LEAPENERGY for Superior BDU Solutions

As the electric vehicle industry continues to evolve rapidly, selecting the right BDU manufacturer becomes crucial for ensuring vehicle safety, reliability, and market success. LEAPENERGY stands out among China’s top BDU manufacturers through our unwavering commitment to innovation, quality, and customer satisfaction. 、Our comprehensive range of BDU solutions combines cutting-edge technology with proven reliability, ensuring optimal performance across diverse applications from passenger vehicles to commercial fleets and industrial energy storage systems.

With our advanced manufacturing capabilities, rigorous quality control processes, and dedicated customer support team, LEAPENERGY is your ideal partner for all battery safety requirements. Contact us today to discover how our innovative BDU solutions can enhance your electric vehicle projects and ensure the highest standards of battery safety and performance.