Lithium batteries are a type of rechargeable battery that uses lithium-ion technology and are widely used in various applications such as mobile devices, electric tools, and electric vehicles. Lithium batteries can be divided into several main types, and each type has a different model. The following are common types of lithium batteries and some representative models:
1. Lithium ion batteries (Li ion):
Commonly found in devices such as mobile phones, laptops, cameras, etc.
Some common models:
18650: Commonly used for laptop battery packs, power tools, handheld lights, etc.

21700: In recent years, it has gradually replaced 18650 and is used in electric vehicles, large capacity battery packs, etc.

2. Lithium Polymer Batteries (Li Po):
It has a more flexible shape and is suitable for some thin equipment.
Common models are not standardized like lithium-ion batteries, but vary based on their shape and capacity.

3. Lithium Iron Phosphate (LiFePO4):
It has high safety and lifespan, and is commonly used in electric vehicles, electric bicycles, energy storage systems, etc.
Some common models:
26650: Commonly used for high-capacity battery packs, such as electric tools and vehicles.

4. Lithium Manganese Oxide (LiMn2O4):
It has high discharge current and high energy density, and is used in some applications that require high power, such as electric tools.
Some common models:
14500: Used for some small electronic devices.

5. Lithium Cobalt Oxide (LiCoO2):
It has a high energy density and is commonly used in portable electronic devices.
Some common models:
18650: Used for laptop battery packs, digital cameras, etc.