• At LG Energy Solution Nanjing, quality inspection occurs at every stage of battery production, built on systematic process oversight to detect even the most subtle defects.
• Experts Youngyong Cho and Xu Jizeng share how rigorous quality management and long-term workforce development support the safety and reliability of EV batteries at the Nanjing plant.

At LG Energy Solution Nanjing, quality management is integrated into every stage of battery production, from raw material inspection to final shipment. To celebrate the Labor Day holiday, the site explored how it maintains stable operations while upholding the rigorous quality standards for batteries supplied to customers around the world.

These on-site efforts are led by Youngyong Cho, Cylindrical Quality Department Leader at LG Energy Solution Nanjing. Since joining the plant in 2018, Cho has begun each day by reviewing quality and defect data from the previous production cycle, then working with teams across the site to identify root causes and implement corrective actions.

“Battery manufacturing combines chemistry with precision manufacturing, meaning every process is closely interconnected,” said Cho. “Even a single faulty cell in an EV battery can impact the safety and reliability of the entire system.”

As EV battery technology evolves, quality standards are also becoming more demanding. LG Energy Solution Nanjing addresses these requirements through a multi-stage quality management system. Monitoring checkpoints are built into key production processes to verify manufacturing conditions in real time, and battery cells undergo comprehensive inspection before shipment. Production data is also continuously analyzed to support process and quality improvement.

Quality is supported not only by systems and processes, but also by the capabilities of the workforce. Xu Jizeng, Team Leader of China Regional Group, HR & Talent Development at LG Energy Solution, helps strengthen talent development through employee training programs across the company’s China operations. His work focuses on building operational expertise and long-term technical skills. “As employees grow, the company grows with them,” said Xu.

Through its Leadership Center, LG Energy Solution Nanjing provides more than 300 in-person training sessions each year across multiple course categories. Programs are regularly updated to reflect evolving operational needs, with recent additions including AI applications and leadership development.

More than 600 engineers and technicians have completed in-house Programmable Logic Controller (PLC) training dedicated to automation systems used in battery production lines. Established through internal collaboration, the lab reflects the company’s broader efforts to develop manufacturing expertise internally.

The company also continues to expand its Six Sigma-based quality and process improvement programs, creating long-term talent development pathways across its operations. In one example, an employee who moved into the energy industry from a language studies background became the first at LG Energy Solution Nanjing to earn Master Black Belt (MBB) certification — the highest level within the Six Sigma framework — and now leads her own team.

Quality management at LG Energy Solution Nanjing goes beyond manufacturing system and is driven by on-site efforts across the organization. As Cho and Xu explained, maintaining a high standard of quality requires not only advanced systems but also the active involvement of every individual at every stage of the process.

The company’s multi-stage quality management system upholds rigorous quality standards, while the Leadership Center translates workforce capabilities into operational expertise. Through continuous process oversight, cross-functional collaboration, and long-term talent investment, the company continues to enhance the consistency, reliability, and safety of its battery technologies.

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