What is an 18650 Battery?
A lithium-ion battery with a cylindrical shape.
The “18” refers to a diameter of 18mm.
The “65” indicates the length is 65mm.
The “0” means it is cylindrical in shape.
Types of 18650 Batteries:
Ordinary lithium batteries: Used in everyday consumer electronics.
Power batteries: Designed for high-current applications such as power tools and electric vehicles, requiring high instantaneous discharge rates and large current capabilities.
Common Applications:
Power Tools: Electric scissors, drills, hammers, and other tools requiring high power output.
Consumer Electronics: Laptops, tablets, smartphones, handheld game consoles, leveraging the battery's high energy density.
Electric Vehicles: Used in electric bicycles, motorcycles, and cars for their high energy needs.
Home Smart Devices: Solar street lights, smart locks, smoke detectors, wireless monitoring systems.
Toys & Models: Remote control cars, airplanes, robots.
Medical Equipment: Portable blood pressure monitors, glucose meters, heart rate monitors.
Military Equipment: Night vision devices, laser sights, requiring high energy and reliability.
Industrial Equipment: Drones, robots, relying on the battery's energy density and long life.
Electronic Cigarettes: Used as a power source in vaping devices.
Flashlights: Due to their high capacity and voltage, often used in lighting systems.
High energy density, long life, low self-discharge rate, and low internal resistance make them ideal for diverse applications requiring compact, reliable power solutions.
NO. | Item | Specifications |
|---|
| 4.1 | Typical Capacity | 2230mAh @ 0.2C Discharge |
| 4.2 | Minimum Capacity | 2150mAh @ 0.2C Discharge |
| 4.3 | Nominal Voltage | 3.7V |
| 4.4 | Standard Charge | CC/CV, 0.2C 5A, 4.20V |
| 4.5 | Standard Discharge | CC, 0.2C 5A, 3.00V |
| 4.6 | End-of-charge Voltage | 4.20V ± 0.05V |
| 4.7 | End-of-charge Current | 0.01C 5A (At CV mode) |
| 4.8 | End-of-discharge Voltage | 3.00V |
| 4.9 | Charging Time | 8.0 hours (standard charge) |
| 4.10 | Quick Charge Current | 1000mA (0.5C) |
| 4.11 | Quick Discharge Current | 1000mA |
| 4.12 | Max Discharge Current | 2200mA |
| 4.13 | Initial Impedance | Max: 45mΩ |
| 4.14 | Weight | Approx: 46 ± 1g |
| 4.15 | Operating Temperature | Charging: 0℃~45℃<br>Discharging: -20℃~60℃ |
| 4.16 | Storage Temperature | -5℃~35℃ |
| 4.17 | Storage Humidity | ≤75% RH |
| 4.18 | Appearance | Without scratch, distortion, contamination, and leakage |
| Temperature | 23 ± 5℃ |
| Standard Environmental Condition | Humidity: 45-75% RH<br>Atmospheric Pressure: 86-106 KPA |
EASTAR specializes in high-performance cylindrical lithium batteries, offering reliable and high-quality solutions for various applications. Our products include a wide range of lithium batteries that provide excellent performance and long-lasting power for everything from portable devices to high-power systems. Our Battery Range: 18650 Battery: 800mAh to 3500mAh, with high energy density for devices like flashlights, laptops, and drones. 21700 Battery: 3000mAh to 5000mAh, ideal for power tools, electric vehicles, and high-power applications. 26650 Battery: 3000mAh to 5200mAh, designed for high-drain devices that require long runtimes. 14500 Battery: 600mAh to 1000mAh, similar to AA batteries but with higher voltage, for portable electronics. 16340 Battery: 600mAh to 1000mAh, a rechargeable alternative to CR123A batteries, for small devices. 10440 Battery: 200mAh to 600mAh, similar to AAA batteries, with higher voltage for compact devices.
Comprehensive Product List and Key Features
14500 Model
• Nominal Capacity: 700mAh
• Rated Energy: 2.59Wh
• Max Discharge Current: 700mA
• Dimensions: 14.5mm (D) x 49mm (H)
• Applications: Small electronic devices, LED lighting, portable equipment
18650 Models
• Capacity Range: 800mAh - 3500mAh
• Energy Range: 2.96Wh - 12.95Wh
• Max Discharge Current: 800mA - 10000mA (10A)
• Dimensions: 18.13mm (D) x 65.10mm (H)
• Weight: 27g - 45g
• Applications: Flashlights, power banks, e-bikes, laptops, power tools
21700 Models
• Capacity Range: 3000mAh - 5000mAh
• Energy Range: 12.21Wh - 18.5Wh
• Max Discharge Current: 10000mA - 15000mA (10A-15A)
• Dimensions: 21.13mm (D) x 70.10mm (H)
• Weight: 60g - 70g
• Applications: Electric vehicles, high-drain devices, energy storage systems
26650 Models
• Capacity Range: 5000mAh - 5500mAh
• Energy Range: 18.5Wh - 20.35Wh
• Max Discharge Current: 15000mA (15A)
• Dimensions: 28.18mm (D) x 65.10mm (H)
• Weight: 70g
• Applications: High-capacity power storage, solar energy systems, industrial equipment
Key Features
• High energy density and stable performance
• Wide operating temperature range
• Long cycle life and low self-discharge rate
• Suitable for high-drain and high-capacity applications
| Model | Nominal Voltage (V) | Nominal Capacity (mAh) | Max Discharge Current (mA) | Charging Voltage (V) | Discharge Voltage (V) | Max Diameter (mm) | Max Height (mm) |
|---|
| ICR14500 | 3.7 | 700 | 700 | 4.2 | 2.75 | 14.3 | 49 |
| ICR18650 | 3.7 | 800 | 800 | 4.2 | 2.75 | 18.13 | 65.10 |
| ICR18650 | 3.7 | 1200 | 1200 | 4.2 | 2.75 | 18.13 | 65.10 |
| ICR18650 | 3.7 | 1500 | 1500 | 4.2 | 2.75 | 18.13 | 65.10 |
| ICR18650 | 3.7 | 1800 | 1800 | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 2000 | 2000 | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 2200 | 2200 | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 2600 | 3C | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 3200 | 3C | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 3400 | 3C | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM18650 | 3.7 | 3500 | 3500 | 4.2 | 2.75 | 18.13 | 65.10 |
| NCM21700 | 3.7 | 3000 | 3000 | 4.2 | 2.75 | 21.13 | 70.10 |
| NCM21700 | 3.7 | 4000 | 4000 | 4.2 | 2.75 | 21.13 | 70.10 |
| NCM21700 | 3.7 | 4500 | 3C | 4.2 | 2.75 | 21.13 | 70.10 |
| NCM21700 | 3.7 | 4800 | 3C | 4.2 | 2.75 | 21.13 | 70.10 |
| NCM21700 | 3.7 | 5000 | 3C | 4.2 | 2.75 | 28.18 | 65.10 |
| NCM26650 | 3.7 | 5500 | 3C | 4.2 | 2.75 | 28.18 | 65.10 |
| NCM26650 | 3.7 | 5500 | 3C | 4.2 | 2.75 | 28.18 | 65.10
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