About SUNJ ENERGY (LUOYANG) CO., LTD.
Founded in 2017, SUNJ ENERGY (LUOYANG) CO., LTD. is a high-tech enterprise dedicated to the research, development, manufacturing, and sales of advanced lithium primary batteries and energy storage solutions. Located in Luoyang, China, our company spans a total area of 33,300 square meters with a total investment of USD 42 million.
SUNJ specializes in the production of:
● 3.6V Lithium Thionyl Chloride (Li-SOCl₂) batteries
● 3.0V Lithium Manganese Dioxide (Li-MnO₂) batteries
With 38 state-of-the-art production lines and an annual output capacity of 216 million battery cells, SUNJ stands among the industry leaders in lithium primary battery manufacturing.
Our cylindrical lithium batteries are widely used across diverse sectors, including:
● Smart Utility Meters (Gas, Water, Electricity)
● Medical Devices & Scientific Instruments
● Automotive Electronics & Telematics
● Alarm & Security Systems
● Remote Data Acquisition Systems
● Oil & Gas Exploration Equipment
● GPS & Positioning Devices
● Digital Pressure Gauges & Flow Meters
● TPMS, LoRaWAN, NB-IoT Applications
● RFID, RAM & CMOS Circuits
● Geothermal Heat Detectors, Sonar, and Military Devices
● Various Intelligent Monitoring and Sensing Systems
R&D and Technical Strength
SUNJ's technical backbone is built on over 30 years of expertise in lithium primary battery research. Our R&D capabilities are enhanced by:
● The Municipal Standardization R&D Center for Primary Lithium Batteries
● Specialized laboratories for Li-SOCl₂ batteries, Li-MnO₂ batteries, and EPC hybrid capacitors
● Strategic partnerships with leading universities and scientific research institutes
This strong foundation in innovation ensures that SUNJ remains at the forefront of battery technology and customization.
Certifications and Quality Assurance
SUNJ is committed to the highest standards of quality, environmental responsibility, and occupational health. We are certified to the following international standards:
● ISO 9001 (Quality Management)
● ISO 14001 (Environmental Management)
● ISO 45001 (Occupational Health & Safety)
In addition, SUNJ is a SGS-certified company, and our products meet multiple international safety and compliance standards:
● CE, RoHS, MSDS
● UN38.3 for transportation safety
● GB8897.4 Explosion-Proof Certification
Your Trusted Global Battery Partner
With a strong commitment to innovation, precision manufacturing, and customer-centric service, SUNJ ENERGY provides high-performance energy solutions to meet the evolving needs of global industries. We are proud to serve clients across more than 30 countries, delivering reliability, consistency, and excellence in every cell we produce.
Partner with Confidence
By integrating strict quality controls with robust certification systems and a commitment to innovation, SUNJ ENERGY empowers customers around the world with reliable, high-performance lithium battery solutions.
▎ Trust SUNJ. Power the future.
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At SUNJ Energy, we are committed to delivering consistent, high-quality battery products that meet the rigorous demands of global markets. Our production processes are ISO 9001:2015 certified, and we adhere to strict quality metrics from manufacturing to sales and logistics, ensuring product reliability and customer satisfaction at every stage.
We have established a dedicated in-house Testing Center equipped with advanced facilities and instrumentation, including: ● Performance Testing Lab ● Physical & Chemical Testing Lab ● Environmental Testing Lab ● Safety Testing Lab.
These facilities enable comprehensive quality inspection and performance evaluation of our lithium batteries, ensuring compliance with international safety and performance standards.
At SUNJ, our Quality Management System goes beyond compliance:
● Continuous Process Optimization – We consistently upgrade production techniques and technology to achieve higher efficiency and lower defect rates.
● People-Oriented Workplace – We prioritize employee well-being by maintaining safe, clean, and ergonomically designed facilities.
● Sustainable & Responsible Manufacturing – Our processes are aligned with eco-friendly practices, reducing environmental impact through material management and energy control.
● Company-Wide Quality Culture – From R&D to logistics, every team member is responsible for quality—because excellence is not inspected in, it is built in.
CE Certificate
Environmental
ISO9001 Certificate
MSDS Certificate
Occupational Health & Safety Management System Certification
RoHS Certificate
We strictly comply with environmental regulations, reduce energy consumption, and promote battery recycling.
All employees follow our environmental principles to prevent incidents and minimize impact.
We also enhance product recycling and continuously improve environmental performance.
