The 21700 Battery 3.7V 5000mAh M50LT INR21700 is a high-capacity, rechargeable lithium-ion cylindrical cell, engineered for reliable power and long cycle life. With a 3C discharge rate (14.4A), it ensures stable performance in demanding applications such as power banks, e-bikes, flashlights, solar equipment, UPS systems, and energy storage solutions. Its compact 21700 size makes it an ideal upgrade over 18650 cells, offering higher energy density and efficiency.