About OECV Power

OECVPOWER, headquartered in Shenzhen, is a leading manufacturer dedicated to the R&D, production, and system integration of cylindrical lithium-ion cells and battery packs. With our own cell production lines and PACK assembly facilities, we are committed to providing safe and reliable battery solutions for customers worldwide. We have established two major cell production bases in South and East China, along with two intelligent PACK manufacturing centers. Our product portfolio covers the full range of 18650, 21700, 32140, and 40140 cylindrical cells, as well as custom battery packs configured from 2S to 24S. The 32140 and 40140 large-format series feature full-tab technology combined with a LiFePO4 safety architecture, delivering lower internal resistance, superior thermal management, and enhanced safety margins—all certified through nail penetration testing. With high energy density and excellent rate capability, our products are widely used in light electric vehicles, drones, power tools, smart home devices, garden machinery, and lightweight energy storage systems.