A next-generation cylindrical lithium-ion cell (21mm×70mm), widely adopted in premium battery pack designs. With higher energy density (3000-5000mAh) and enhanced thermal efficiency compared to 18650 cells, it drives performance in electric vehicles, energy storage systems, and high-power tools. Optimized for fast-charging, extended cycle life (1000+ cycles), and scalable modular integration, these cells enable safer, lighter, and more energy-dense battery pack solutions.