18650, 21700, 30700, 4680 and other Li-ions
Common sizes of cylindrical Li-ions include: 14500 – is smaller but similar in size to a primary AA battery. Capacities are typically under 1,000
Cylindrical lithium-ion battery cells are a type of rechargeable battery commonly used in a wide range of electronic devices, electric vehicles, and energy storage systems. They are characterized by their cylindrical shape, standardized sizes, and high energy density, making them versatile and suitable for various applications.
Typical lithium ion battery cell sizes—18650, 21700, and 26650—are named by their dimensions (e.g., 18 mm × 65 mm) and range in capacity from ~1,300 mAh up to 6,800 mAh. Compared to nickel metal hydride and other traditional chemistries, lithium-ion cells typically have a very low self-discharge rate.
For instance, “65” represents a height of 65mm. Fifth Digit: The fifth digit indicates the cylindrical shape of the cell. Typically, it's “0” for cylindrical cells. By following this naming convention, we can easily identify the size and shape of cylindrical lithium-ion battery cells.
The most common lithium-ion battery cell sizes may include cylindrical, prismatic, and pouch cells. They all come with different dimensions and characteristics. The li ion battery cell sizes have wide applications in several electronic devices. These applications may include LED art, digital watches, automobile remotes, or computer motherboards.
Lithium-ion battery cells are a revolutionary invention for the portable electronics and energy storage. They have high energy density, lightweight design, and long cycle life. So, it is essential to know the different sizes, specifications, and uses of lithium-ion battery cells.
Cylindrical lithium-ion batteries are typically represented by five digits; the first two digits refer to cell diameter, the third and fourth digits indicate physical length, and the fifth digit indicates shape. Choosing the right lithium battery size, such as ups batteries, is essential for device performance, runtime, and power output.

Common sizes of cylindrical Li-ions include: 14500 – is smaller but similar in size to a primary AA battery. Capacities are typically under 1,000
Five-digit numbers usually represent cylindrical lithium-ion cells. From the left side, the first and second digits refer to the diameter of the battery, the third and fourth digits refer to the height
Cylindrical lithium-ion batteries play a crucial role in the energy storage solutions of modern devices. From powering smartphones to electric vehicles, these batteries are
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This article provides an overall introduction of cylindrical lithium ion battery, about its different types and different sizes, also the pros and cons.
lithium-ion battery cell is a rechargeable battery that uses lithium ions as the primary charge carrier. These batteries are widely used in portable electronic
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Cylindrical lithium battery is a kind of lithium ion battery, its shape is cylindrical, so it is called cylindrical lithium battery.
Understand lithium-ion battery sizes like 18650, 14500, and pouch cells, and their applications in gadgets, EVs, and energy storage systems in 2025.
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Cylindrical lithium-ion cells are usually represented by five digits unting from the left,the first and second digits refer to the diameter of
Cylindrical lithium-ion battery cells are a type of rechargeable battery commonly used in a wide range of electronic devices, electric vehicles,
When selecting a lithium battery for your RV, marine vessel, or off-grid system, it''s not just about the shape of the cells. The format—prismatic, cylindrical, or pouch—directly
Typical lithium ion battery cell sizes—18650, 21700, and 26650—are named by their dimensions (e.g., 18 mm × 65 mm) and range in
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Currently, the internationally accepted standards and codes for lithium battery sizes are as follows: Cylindrical Batteries – Examples include 18650, 14500,
From powering smartphones to electric vehicles, these batteries are designed to deliver high energy density and long cycle life. This article aims to demystify the different sizes
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What''s the difference between pouch, prismatic, and cylindrical cells in lithium batteries? Read our guide to find the right battery cell type for your system.
When it comes to cylindrical rechargeable lithium ion battery, there are a few different sizes that you need to be aware of. The 18650 battery
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