26650 lithium battery is a large capacity and high performance lithium ion battery, which is widely used in electric tools, electric vehicles, energy storage systems and other fields. This article will conduct a comprehensive analysis of 26650 lithium batteries, including their dimensions, materials, performance and other aspects in detail.

I. Size and appearance

the size of the 26650 lithium battery is 26mm in diameter and 65mm in height, hence the name 26650. The appearance is generally cylindrical, the positive electrode and the negative electrode are located at both ends respectively, and the shell is mostly made of metal.

II. Material composition

1. positive electrode materials: lithium cobalt oxide (LiCoO2), lithium nickel manganese cobalt oxide (NMC), lithium iron phosphate (LiFePO4), etc. are usually used for positive electrode. These materials have high energy density and good cycle life.
2. Negative electrode material: the negative electrode is mainly made of graphite, silicon and other materials for storing lithium ions.
3. Electrolyte: electrolyte is an important component of lithium battery, which is generally a mixture of organic solvent and lithium salt for transferring lithium ions.

III. Performance characteristics

1. capacity: the capacity of 26650 lithium batteries is generally between 2500mAh and 6000mAh, and the larger capacity is suitable.Meet high-demand application scenarios.
2. Charge and discharge cycle life: the high-quality 26650 lithium battery has a long charge and discharge cycle life and can withstand multiple charge and discharge cycles without damage.
3. Safety: The high-quality 26650 lithium battery has multiple safety measures, such as overcharge protection, overdischarge protection, short circuit protection, etc., to ensure the safety and reliability of the battery during use.
4. High temperature characteristics: some high-quality 26650 lithium batteries have good high temperature characteristics and can work stably in high temperature environment.

IV. Application field

1. electric Tools: due to its large capacity and stable performance, 26650 lithium batteries are often used in electric tools, such as electric drill, electric saw, etc.
2. Electric vehicles: some electric bicycles, electric motorcycle and other electric vehicles also use 26650 lithium batteries to provide sufficient power and endurance.
3. Energy storage system: in the energy storage system, 26650 lithium batteries can be used to store solar energy, wind energy, etc. to supply household or commercial electricity.

V. Maintenance and use

1. charging method: Use a special charger to charge, avoid overcharging or overdischarging, and keep the battery in a suitable charging state.
2. Storage precautions: when not in use for a long time, the battery should be stored in a low temperature, dry and ventilated environment, and charge and discharge regularly to keep the battery active.

26650 lithium battery as a lithium ion battery with superior performance, it is widely used in many fields. Choosing a suitable 26650 lithium battery and paying attention to its size, material, performance and other characteristics can provide users with better use experience and performance.