The INR21700 50E 5000mAh 10A Li-ion Battery is a high-capacity cylindrical lithium-ion cell designed in Korea, delivering 3.6V nominal voltage with a discharge current of 10A. Widely used in electric bikes (E-bikes), energy storage systems, solar applications, and battery packs, this rechargeable cell ensures long cycle life, stable performance, and reliable power delivery. Its 21700 cylindrical form factor offers higher energy density compared to 18650 batteries, making it an ideal choice for modern high-capacity battery packs.