NCM/NCA 21700 40Y Ultra High Rate Cylindrical Lithium Battery

21700 40Y is a top ultra high rate cell of NCM/NCA ternary system, with core selling points of 3.5mΩ ultra-low internal resistance and 70A ultra-high rate discharging, 4000mAh capacity, 3.6V stable voltage, 12A fast charging, suitable for extreme high-power scenarios such as power tools and racing equipment. Top high nickel NCM ternary cathode material and high conductivity electrolyte are adopted, matched with high-quality current collector to greatly reduce internal resistance and achieve ultimate rate performance. The production adopts top precision production process, laser welding and vacuum liquid injection to ensure sealing, 100% full inspection and extreme working condition tests to ensure safe and stable large current discharge. The core advantage is the balance between ultra-low internal resistance and ultra-high rate, 70A instantaneous discharge without voltage drop, capacity retention rate over 80% after 500 cycles, ≤69.0g suitable for 21700 specification equipment. The application covers extreme high-power equipment, racing UAVs, etc., supporting customized solutions to help overseas high-end extreme scenario market.