21700 Batteries | High-Performance Lithium-Ion Cells

Shop premium 21700 batteries at IMR Batteries. These lithium-ion cells measure 21mm in diameter and 70mm in length, offering increased capacity and energy density compared to 18650 batteries. Ideal for high-drain devices like flashlights, power tools, and electric vehicles, 21700 batteries deliver reliable, long-lasting power. Choose from high-capacity options and various discharge rates to meet your needs. Browse our collection of authentic, top-tier 21700 batteries today!