Are 18650 LiPo Battery?

18650 battery is a type of 3.7v lithium-ion rechargeable battery, also call secondary li-ion battery that is commonly used in a wide range of electronic devices, including laptops, e-bikes, electronic cigarettes, LED flashlights, power tools, electric vehicles, portable powerbanks, and more
. The 18650 refers to the battery’s dimensions, with 18mm in diameter and 65mm in length. But if add a protection circuit module, the battery length will be longer.

Typically, 18650 has a nominal voltage of 3.6v – 3.7v, and capacity from 2000mAh to 3500mAh, if you need there are higher capacity options. All 18650 batteries are rechargeable batteries, and the battery cycle is over 500, after 500 cycles, the capacity degrades.

18650 is a standard cylindrical lithium-ion rechargeable battery, it has many advantages, such as high energy density, long lifespan, and versatility. Many electronic devices are designed based on 18650 batteries because it is very easy to find and replace.

The difference between 18650 and LiPo Battery

18650 battery is a type of standard cylindrical lithium-ion battery, it is not a lipo(lithium polymer) battery. The main difference between 18650 batteries and lithium polymer (LiPo) batteries is their shape and chemistry.


18650 is a cylindrical shape battery, but the lipo battery usually is rectangular in shape. Also, the 18650 is a hard case batter, but the lipo battery is a flexible, pouch-like shape. 


The 18650 and lipo batteries use different electrolytes. Typically, 18650 batteries use a liquid electrolyte, while lipo batteries use a solid or gel-like polymer electrolyte.

Compared to 18650, the lipo batteries have a lighter weight and higher energy density. Small electronic devices link smartphones and drones, they have limited weight and space, the lipo battery is a more suitable choice. But for larger devices, such as laptops, and electric vehicles, the 18650 battery is more common. The choice of a 18650 battery or a lipo battery depends on the specific requirements of your devices, including size, weight, voltage, energy density, and safety.

18650 lithium-ion Battery

We have 2200mAh 18650, 2600mAh 18650, 3200mAh 18650, and 3500mAh 18650, all 18650 batteries can make battery packs according to your requirements. Also, we have high C discharge rate 18650 battery you may interest, the link is

21700 lithium-ion Battery

21700 is also a standard model of lithium-ion rechargeable battery. The name “21700” are the battery’s dimensions, with 21mm in diameter and 70mm in length. The 21700 lithium-ion battery also can be order as a cell or battery pack.

26650 lithium-ion Battery

The 26650 lithium-ion rechargeable battery diameter is 26mm, and the length is 65mm. It is one of the standard models of hard case cylindrical li-ion batteries. If you need to order batteries or get more information, please email us.

Rechargeable Lithium-ion Battery List

*All Li-ion battery sizes include a standard protection circuit module(PCM) and wires.
*All Li-ion batteries can be made into the battery packs, 1S2P configuration, 2S3P configuration, etc.
*If you can't find a suitable Li-ion battery on the website. Please leave a message to tell me your specific requirements.