Lithium-ion batteries, backed by years of comprehensive R&D, are among the most common among other battery technologies, constantly improving the world's best-known and consistently used batteries. For comprehensive information about Li-ion batteries, you can check out our blog post.
Lithium-ion (Li-ion) batteries are an advanced battery technology that uses lithium ions as the fundamental component of electrochemistry. During discharge cycles, lithium atoms on the anode ionize and separate from their electrons. Lithium ions are small enough to pass through the micropermeable separator between the anode and cathode.
Li-ion batteries are the most popular rechargeable battery chemistry today. They power cell phones, laptops, cameras, and many other electronic devices. They consist of single or multiple Li-ion cells with protective circuit boards. When inserted into a device with a protective circuit board, the cell or cells are referred to as a battery.
The most popular form of lithium-ion batteries includes cylindrical lithium-ion cells, prismatic lithium-ion cells, and lithium pouch cells.
A cylindrical lithium-ion cell, also known as a "round lithium battery," is a cylindrical battery. Popular models include 14650, 17490, 18650, 21700, and 26650.
Cylindrical cells are used for creating small and large battery packs with different capacities and voltages. These cells are more suitable for applications that consider weight and limited space. Applications include AH batteries, children's toys, drones, medical equipment, and power tools.
The prismatic lithium-ion cell has a rectangular shape and provides a larger capacity per volume by having more lithium. Therefore, it is commonly used to create larger battery packs and is the best choice among batteries used in energy storage devices. These types of cells are also found in power and energy cells and can be used in batteries designed to meet sealed lead-acid battery dimensions.
Lithium Pouch Cell
A lithium pouch cell consists of an aluminum foil pouch with terminal tabs at both ends. This cell form factor allows for the most lithium per volume. It is necessary for mobile rotating applications that generate high loads/torques, such as power tools and e-bikes, scooters.
18650 Battery Specifications
An 18650 battery is a widely preferred lithium-ion rechargeable battery. It is used in many areas such as cameras, fitness equipment, baby monitors, flashlights, and more. The voltage of the 18650 cell is 3.7V, and its capacity ranges from 1800mAh to 3500mAh (milliampere-hours). You need to pay attention to the voltage and current when using these batteries.
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