Lishen 4000 mAh 21700

Lishen 4000 mAh 21700 is a lithium-ion 21700 battery cell from Lishen, designed for reliable performance and good capacity. It has a nominal capacity of around 4000 mAh and a nominal voltage of about 3.6 V, with dimensions of approximately 21 mm diameter and 70 mm length, providing a solid energy reserve in a compact size. The cells are suitable for moderate to high-drain devices such as e-bikes, electric scooters, portable battery packs, and power tools. They provide stable discharge currents, and their low internal resistance reduces heating during use. Lishen 4000 mAh 21700 cells are often used in battery packs assembled in series and parallel to achieve the desired voltage, current, and capacity.