AK POWER 3.7V 5000mAh 21700 NCM Cell is a high-capacity rechargeable battery engineered for demanding applications in power tools, e-bikes, cleaning robots, and portable electronics. Featuring a robust NCM chemistry, 3C fast charge/discharge rate, and long cycle life up to 1000 cycles, this battery delivers reliable and efficient energy storage. With a compact 21mm x 70mm cylindrical design and a nominal energy of 18.25Wh, it's ideal for high-drain devices and energy-intensive systems. UL-certified and built to international standards, this AK POWER battery ensures stable performance and safety in diverse industrial and consumer applications.More