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What Is 18650 Lithium-Ion Battery?

The versatility and popularity of 18650 lithium-ion batteries is astounding. These rechargeable batteries can be found in many electronic devices such as cell phones, automobiles and power tools.

The lithium-ion batteries have their distinct advantages and environmentally-friendly benefits. You can also buy 18650 Lithium Ion Rechargeable Battery via ibatteries.

PKCELL Flat Top 18650 3.7V 3000mAh Rechargeable Li-Ion Battery

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This article will explain the various components of lithium-ion batteries and how they interact to produce long-lasting, high-functioning power sources.

The Components

There are many sizes and shapes of lithium-ion batteries. They look almost identical inside. It is important to understand the roles of each component in a lithium-ion battery operation.

The Cell

There are many parts to a lithium-ion battery. The most important component of a lithium-ion battery is its cell.

These are the battery materials that make up the cell:

  • The two ends of a battery are called the electrodes. The anode is the one and the cathode is the other.
  • The anode stores lithium and is usually made of carbon.
  • The cathode stores lithium as well and is made of a chemical compound which is a metal oxidizer.
  • The separator prevents the flow of electrons in the battery from being negative or positive, but allows ions to pass through.

The electrolyte fluid sits between both electrodes. It is responsible for carrying the positively charged lithium ions from the anode into the cathode, and vice versa, depending on whether the battery has been charging or discharging.