The 21700 3.7V 5000mAh sealed secondary lithium-ion battery is a high-capacity cylindrical rechargeable cell, offering an excellent balance of energy density, size, and performance. With a larger format than the standard 18650 cell, this 21700 battery delivers extended runtime and higher current handling capabilities, making it ideal for electric vehicles, power tools, portable electronics, solar storage systems, robotics, and high-drain applications.
The sealed construction provides protection from moisture, dust, and external damage, ensuring reliability in demanding or mobile environments.
Features:
High energy density with compact size and long runtime.
Extended capacity compared to 18650 cells for power-demanding devices.
Sealed design offers improved safety and environmental resistance.
Rechargeable secondary cell suitable for deep-cycle applications.
Low self-discharge rate and good thermal stability.
Compatible with battery management systems (BMS) for enhanced protection.
Widely used in EV battery packs, drones, robotics, flashlights, and solar systems.
