source:Battery Technology
release time:2025-03-14
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A 21700 Li-ion battery is a cylindrical rechargeable lithium-ion cell with a standard size of 21mm in diameter and 70mm in length. Originally developed by Tesla for electric vehicles, the 21700 format is now widely used in power tools, medical devices, high-performance flashlights, and industrial energy storage systems.
Higher Capacity: 21700 cells typically range from 4000mAh to 5000mAh, whereas 18650 batteries offer 2500mAh to 3500mAh.
Better Energy Density: More efficient power storage means longer runtimes for devices.
Enhanced Performance: Higher discharge rates and longer lifespan, reducing replacement costs.
For businesses, using 21700 rechargeable batteries ensures higher efficiency, lower operational downtime, and improved sustainability.
The term ICR 21700 battery refers to a Lithium Cobalt Oxide (LiCoO2) chemistry, commonly used for applications requiring high energy density but moderate discharge rates.
High Energy Density: Ideal for devices that require longer battery life.
Lower Discharge Rate: Typically below 10A, making them unsuitable for high-drain applications.
Common Uses: Consumer electronics, medical devices, and backup power systems.
If your business requires batteries for power tools, high-drain vaping devices, or electric vehicles, IMR (Lithium Manganese Oxide) or INR (Nickel Manganese Cobalt Oxide) 21700 batteries would be a better fit due to their higher discharge rates.
When selecting a battery 21700, businesses should consider different chemistry types and their applications:
Battery Type | Chemistry | Key Features | Best For |
---|---|---|---|
ICR 21700 | LiCoO2 | High capacity, moderate discharge rate | Consumer electronics, medical devices |
IMR 21700 | LiMn2O4 | High discharge rate, stable performance | Power tools, vaping devices |
INR 21700 | NiMnCo | Balanced capacity and discharge rate | Electric vehicles, energy storage |
IFR 21700 | LiFePO4 | Safe, long cycle life, lower energy density | Industrial energy storage, solar applications |
For most industrial and commercial applications, INR 21700 batteries are the preferred choice due to their balance between capacity, discharge rate, and safety.
Selecting the right 21700 rechargeable batteries depends on several factors:
For High-Drain Applications: Choose IMR or INR 21700 batteries with a discharge rate of 20A or higher.
For Long Runtime Applications: ICR batteries offer higher energy density but lower discharge rates.
Protected 21700 Batteries: Feature built-in BMS (Battery Management System) to prevent overcharging, over-discharging, and overheating. Ideal for consumer electronics and medical devices.
Unprotected 21700 Batteries: Provide higher discharge rates, suitable for power tools and high-performance applications.
Businesses should source battery 21700 cells from reputable manufacturers that meet ISO, UL, and IEC safety certifications to ensure reliability and compliance with regulations.
The 21700 Li-ion battery has revolutionized commercial and industrial energy storage by offering higher capacity, longer lifespan, and greater efficiency than its predecessors. Whether you need an ICR 21700 battery for consumer electronics, 21700 rechargeable batteries for high-drain applications, or a specialized battery 21700 for energy storage, choosing the right product ensures optimal performance and cost-effectiveness.
For businesses seeking high-quality, reliable 21700 batteries, working with certified suppliers and understanding the key specifications can help maximize efficiency and profitability.
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