Because the NCR21700T prioritizes capacity (5000mAh) over high discharge rates, it is best suited for devices requiring long-lasting energy.
The datasheet is honest but incomplete. Always perform your own thermal and cycle-life tests at your intended discharge rate. The 2C limit is real – exceeding it will accelerate aging and may cause cell venting.
The is a premier lithium-ion cell designed to fulfill the extreme requirements of modern high-capacity and high-drain systems . Transitioning from the industry-standard 18650 form factor to the 21700 size allows this cell to offer a significant leap forward in volumetric energy density, run-time, and thermal stability.