Preface: The 26650 lithium battery is a large-capacity, high-performance lithium-ion battery, widely used in power tools, electric vehicles, energy storage systems and other fields. This article will provide a comprehensive analysis of the 26650 lithium battery, including detailed introductions to its size, materials, performance and other aspects.

I. Dimensions and Appearance

The 26650 lithium battery has a diameter of 26mm and a height of 65mm, hence its name 26650. The appearance is generally cylindrical, with the positive and negative poles located at both ends respectively, and the casing is mostly made of metal.

Ii. Material Composition

1. Cathode material

The positive electrode usually adopts lithium cobalt oxide (LiCoO2), lithium nickel manganese cobalt oxide (NMC), lithium iron phosphate (LiFePO4), etc. These materials have high energy density and good cycle life.

2. Anode material:

The negative electrode mainly uses materials such as graphite and silicon for storing lithium ions.

3. Electrolyte:

Electrolyte is an important component of lithium batteries, generally a mixture of organic solvents and lithium salts, used to transfer lithium ions.

Iii. Performance Characteristics

Capacity

The capacity of 26650 lithium batteries is generally between 2500mAh and 6000mAh. The larger capacity is suitable for application scenarios with higher demands.

Charge and discharge cycle life

High-quality 26650 lithium batteries have a long charge and discharge cycle life and can withstand multiple charge and discharge cycles without damage.

Safety

High-quality 26650 lithium batteries are equipped with multiple safety measures, such as overcharge protection, overdischarge protection, and short-circuit protection, to ensure the safety and reliability of the battery during use.

4. High-temperature characteristics

Some high-quality 26650 lithium batteries have excellent high-temperature characteristics and can operate stably in high-temperature environments.

Iv. Application Fields

1. Power tools: Due to its large capacity and stable performance, 26650 lithium batteries are often used in power tools such as electric drills and electric saws.

2. Electric vehicles: Some electric bicycles, electric motorcycles and other electric vehicles also use 26650 lithium batteries to provide sufficient power and endurance.

3. Energy storage system: In energy storage systems, 26650 lithium batteries can be used to store solar energy, wind energy, etc., to supply household or commercial electricity.

V. Maintenance and Usage

Charging method: Use a dedicated charger for charging. Avoid overcharging or overdischarging to keep the battery in an appropriate charging state.

Storage precautions: When not in use for a long time, the battery should be stored in a low-temperature, dry and well-ventilated environment, and charged and discharged regularly to maintain battery activity.

Usage environment: Try to avoid using it in high-temperature, humid, flammable and explosive environments to ensure the safety and stability of the battery.

Conclusion: The 26650 lithium battery, as a high-performance lithium-ion battery, has extensive applications in multiple fields. When choosing a suitable 26650 lithium battery, pay attention to its characteristics in terms of size, material, performance, etc., which can provide users with a better usage experience and performance.