Company Profile

GRAND ENERGY MFG (GUANGDONG) CO LTD (hereinafter referred to as GemRexs Power) is a specialized high-tech manufacturer dedicated to the precision production, customized optimization and global supply of high-performance lithium battery pack solutions.

Technical Expertise

GemRexs Power's core team has been dedicated to the lithium battery industry since 2006, bringing nearly two decades of experience in cell applications and PACK integration. GemRexs Power specializes in lithium-ion and LiFePO₄ battery packs, with mature capabilities in cylindrical and prismatic cell assembly. In 2026, we established a strategic partnership with a renowned pouch cell manufacturer to expand our pouch cell assembly line, completing our PACK capabilities across all three cell formats (cylindrical, prismatic, and pouch).

Quality & Philosophy

GemRexs Power maintains a full-process quality control system covering incoming inspection, cell sorting, laser welding, insulation treatment, module assembly, and aging testing. Automated lines and high-precision inspection equipment ensure the safety and consistency of every battery pack. The company holds ISO9001, ISO14001, and ISO45001 certifications, along with CE, UL (cell-level), and UN38.3 market approvals. Guided by "Quality, Efficiency, Professionalism," GemRexs Power is committed to exceeding customer expectations through flexible OEM/ODM customisation and unwavering product reliability.