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21700 Cell

21700 lithium battery cells are a specific type of cylindrical lithium-ion battery cell that measures 21mm in diameter and 70mm in length. These cells are larger than the more commonly used 18650 cells, which measure 18mm in diameter and 65mm in length.

21700 lithium battery cells offer several advantages over 18650 cells, including:

1. **Higher Energy Density:** Due to their larger size, 21700 cells can typically store more energy than 18650 cells of the same weight. This higher energy density allows for increased battery capacity and longer runtimes in devices.

2. **Improved Performance:** 21700 cells often have higher discharge rates and can deliver more power compared to 18650 cells. This makes them suitable for applications that require high-performance batteries, such as electric vehicles and power tools.

3. **Better Thermal Management:** The larger size of 21700 cells allows for improved thermal management, which can help dissipate heat more effectively during charging and discharging. This can lead to better overall battery performance and longevity.

4. **Increased Safety:** The larger size of 21700 cells can also contribute to improved safety, as they have more space for safety features such as internal separators and thermal protection systems.

Due to these advantages, 21700 lithium battery cells are becoming increasingly popular in a wide range of applications, including electric vehicles, energy storage systems, consumer electronics, and more. Many manufacturers are now adopting 21700 cells in their products to take advantage of their superior performance and energy density.
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