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 | Specification |
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4.1 | Typical Capacity | 2600mAh (Discharge 0.2C) |
4.2 | Minimum Capacity | 2550mAh (Discharge 0.2C) |
4.3 | Nominal Voltage | 3.7V |
4.4 | Standard Charge | 4.20V CC/CV, 0.2C 5A |
4.5 | Standard Discharge | 3.00V CC, 0.2C 5A |
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 | 2000mA |
4.11 | Quick Discharge Current | 2600mA |
4.12 | Max Discharge Current | 7800mA |
4.13 | Initial Impedance | Max: 30mΩ |
4.14 | Weight | Approx. 50g ± 1g |
4.15 | Operating Temperature | Charging: 0℃ ~ 45℃, Discharging: -20℃ ~ 60℃ |
4.16 | Storage Temperature | -5℃ ~ 35℃ |
4.17 | Storage Humidity | ≤ 75% RH |
4.18 | Appearance | Without scratch, distortion, contamination, leakage (No scratch, distortion, stains, or leakage) |
4.19 | Standard Environmental Condition | Temperature: 23±5℃, Humidity: 45%-75%RH, Atmospheric Pressure: 86-106 KPA |
