Our Company

Dongguan Large Electronics Co., Ltd is a national-level high-tech enterprise combining with independent research, development, production and sales for advanced battery systems. We specialize in designing & manufacturing safe, innovative & reliable Li-ion battery packs, smart chargers and efficient power supplies for a broad range of portable, motive and stationary applications.

Our Company


Founded in 2002, has been committed to providing customized battery solutions for global OEMs & ODMs since its establishment. Our products are widely used in modern consumer electronics, industry automation equipment, medical instruments, security products, Internet of things, instruments, power energy storage and other fields. Up to now we have successfully developed more than 5000+ cases for global equipment R&D and manufacturers, delivered more than 100,000,000 + sets products, and obtained more than 80+ national patents simultaneously. After more than 20 years of development and precipitation, LARGE has gradually grown into a leading enterprise in customized lithium battery industry.

Our Advantages

1.20+ years of industry experience designing & manufacturing lithium-ion battery packs, chargers and powers supplies for a broad range of markets.

2.Independent R&D and innovative capacity
Completed R&D platform for battery cells, not only help customer to choose cell from available models but also can design special cells based on customer’s application.

3.Flexible battery management system (BMS) design and customization capabilities

4.Completed management system
ISO9001:2015 Quality Management System
ISO14000:2015 Environment Management System
GB/T45001-2020 Safty Management System
GB/29490-2013 Intellectual Property Management System
T23001-2017 Integrated management System of Information Technology and Industrialization
Product Traceability System

5.Professional battery performance and safety & reliability testing laboratory :
material laboratory, physical and chemical laboratory, electrical performance laboratory, environmental simulation laboratory, electronic laboratory, high voltage laboratory, special power laboratory, BMS laboratory, photovoltaic energy conversion laboratory, photovoltaic cloud monitoring laboratory, photovoltaic energy storage laboratory

6.Professional product certification system:UL/CB/FCC/CE/CQC/CCC/BSMI/PSE/KC/UN38.3/ROHS/REACH/ROHS

7.Vertically integrated manufacturing capabilities save time and costs

8.Stable supply-chain and logistics expertise