What Is ICR 18650 Lithium Battery?

The ICR 18650 lithium battery is a cylindrical battery with a diameter of 18mm and a height of 65mm. The “18650” refers to its size specification, while “ICR” indicates the type of lithium-ion battery. On the battery label, “ICR” represents its chemical composition and performance features.

These batteries are known for their high energy density, long cycle life, and low self-discharge rate. Because of these traits, they are widely used in consumer electronics, electric vehicles, and power tools.

The typical capacity of an ICR 18650 lithium battery ranges from 1800mAh to 3500mAh, with a nominal voltage of about 3.7V. They offer excellent charge/discharge performance, support fast charging, and can reliably meet the high-power demands of modern devices. 

Application Fields of ICR 18650 Lithium Batteries

Thanks to their performance and stability, ICR 18650 batteries are applied in a wide range of electronic products.

• Electric mobility: electric vehicles (EVs), hybrid electric vehicles (HEVs), e-bikes, and electric scooters.
• Power tools: drills, saws, and other equipment that need continuous, reliable power.
• Portable electronics: laptops, camcorders, flashlights, and other lightweight devices that require compact yet long-lasting energy sources.

Their compact size combined with strong performance makes them one of the most versatile lithium battery types available.

Relationship Between ICR 18650 Lithium Batteries and Power Batteries

Power batteries are mainly designed to provide propulsion energy, often used in EVs, HEVs, and other high-power devices like electric bicycles. In many cases, ICR 18650 batteries can serve as power batteries due to their:

• High energy density
• Stable charging/discharging performance
• Long service life

This makes them a strong option for applications that demand both endurance and high power output.

However, not every ICR 18650 cell is suitable for heavy-duty or high-power use. Factors such as discharge rate, cycle life, and temperature resistance determine whether a specific ICR battery can reliably function as a power battery.

Differences Between ICR and INR Batteries

There is often confusion between ICR and INR batteries, but they are not the same.

• INR Batteries
  INR lithium-ion rechargeable batteries typically use cathode materials like lithium manganese oxide, lithium cobalt oxide, nickel-cobalt-manganese (NCM), or lithium iron phosphate.
  • High energy density
  • Safer and more stable compared to ICR
  • Support fast charging and higher current handling
  • Commonly used in laptops, cameras, drones, and other consumer electronics requiring long runtime and consistent energy output
• ICR Batteries
  ICR batteries are designed for high-rate discharge applications.
  • Cathode: often lithium cobalt oxide (LCO) or nickel-cobalt-aluminum oxide (NCA)
  • Anode: typically graphite or other carbon-based materials
  • Can deliver high current quickly, making them ideal for demanding tools and equipment
  • Widely applied in:
    • Power tools
    • Robot vacuums and household appliances
    • Drones and RC models
    • High-speed electric motorcycles
    • Hybrid new energy vehicles
    • Industrial and commercial energy storage
    • Frequency regulation systems and UPS backup power

In short, ICR batteries excel at delivering bursts of high current, while INR batteries balance energy density, safety, and versatility.

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