-What is the difference between a 18650 power lithium-ion battery and an ordinary 18650 lithium-ion battery?

What is the difference between a 18650 power lithium-ion battery and an ordinary 18650 lithium-ion battery?
author:enerbyte source:本站 click506 Release date: 2023-03-21 13:59:05
abstract:
The 18650 power lithium battery supports high current discharge, which may reach a current of 20 times the capacity. The 18650 ordinary lithium ion battery only supports a discharge of 1 time the capacity. That is, a normal 2600mAh battery has a maximum discharge current of 2600mA....

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The 18650 power lithium battery supports high current discharge, which may reach a current of 20 times the capacity. The 18650 ordinary lithium ion battery only supports a discharge of 1 time the capacity. That is, a normal 2600mAh battery has a maximum discharge current of 2600mA.

The capacity of the 18650 power lithium battery is generally about twice smaller than that of ordinary batteries. It is estimated that it will not exceed 2000 mAh at most. Generally in the range of 1000mAh to 1800mAh.

The working voltage of general power lithium batteries is lower than that of ordinary lithium ion batteries. The maximum charging voltage for ordinary lithium ion batteries is 4.2V, while the maximum charging voltage for power lithium ion batteries is about 3.65V. The nominal voltage of ordinary lithium ion batteries is 3.7V, while the nominal voltage of power lithium ion batteries is 3.2V.

1. The positive and negative electrode material particles of the 18650 power lithium-ion battery are smaller than those of the ordinary 18650 lithium-ion battery (increasing the surface area and accelerating the chemical reaction rate), and the membrane material and electrolyte used have better conductivity.

2. The 18650 power lithium-ion battery also has more lugs at the positive and negative electrodes than the ordinary 18650 lithium-ion battery (reducing the internal resistance of the lugs and meeting greater current requirements).

3. The 18650 power lithium battery supports high current discharge, possibly up to 20 times the capacity of the current, while the 18650 ordinary lithium ion battery only supports 1 time the capacity of the discharge.

4. The capacity of a 18650 power lithium battery is generally about twice that of a conventional 18650 lithium ion battery.

5. The maximum charging voltage for ordinary lithium ion batteries is 4.2V, while the maximum charging voltage for power lithium ion batteries is about 3.65V. The nominal voltage of ordinary lithium ion batteries is 3.7V, while the nominal voltage of power lithium ion batteries is 3.2V. Lithium ion batteries are batteries that use non aqueous electrolyte solutions and use lithium metal or lithium alloys as negative electrode materials. In 1912, lithium metal batteries were first proposed and studied by Gilbert N. Lewis. In the 1970s, M.S. Whittingham proposed and began researching lithium ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. Therefore, lithium ion batteries have not been used for a long time. With the development of science and technology, lithium ion batteries have become the mainstream.

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