21700 Batteries

21700 batteries are a newer generation of lithium-ion cells designed to deliver higher capacity and improved energy density compared to traditional cylindrical formats. These cells are widely used in applications requiring longer runtime, efficient power delivery, and reliable performance.

At IMR Batteries, we offer a wide selection of 21700 lithium-ion batteries from leading manufacturers such as Samsung, Molicel, LG, and more. This category includes both high-capacity cells for extended runtime and high-drain cells for demanding applications.

21700 Battery Specifications

Nominal Voltage: 3.6V – 3.7V
Fully Charged Voltage: 4.2V
Discharge Cutoff Voltage: 2.5V – 3.0V
Capacity Range: Typically 4000mAh – 6000mAh
Continuous Discharge Rate (CDR): Varies by model, commonly 10A – 45A+

Common Applications for 21700 Batteries

✔ Drones & UAV Systems – Used in high-performance and long-runtime battery configurations
✔ Robotics & Automation – Supports advanced systems requiring efficient power delivery
✔ Battery Packs & Energy Storage – Ideal for custom battery pack builds and modular systems
✔ Power Tools & Equipment – Suitable for high-output tools requiring consistent current
✔ Portable Electronics – Used in devices requiring higher capacity and longer runtime

Choosing the Right 21700 Battery

21700 batteries are available in a range of capacities and discharge ratings. High-capacity cells are ideal for extended runtime, while high-drain cells are better suited for applications that require higher current output.

Selecting the appropriate battery depends on your system requirements, including power demand, runtime expectations, and overall design.

Why Buy 21700 Batteries from IMR Batteries

✔ Wide Selection – Multiple brands and performance levels available
✔ Authentic Cells – Sourced from trusted manufacturers
✔ Reliable Inventory – Consistent availability for ongoing projects
✔ Fast Shipping – Orders processed quickly from our U.S. warehouse

Browse our full selection of 21700 batteries to find lithium-ion cells suited for your application.