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What are the functions of testing the internal resistance of Panasonic battery?

We need to test the internal resistance of Panasonic battery for use. Do you know what the function of testing the internal resistance of Panasonic battery is? Here is a detailed introduction:
Panasonic battery refers to the resistance of current flowing through the battery when the battery is working. It consists of ohmic internal resistance and polarized internal resistance. The large internal resistance of the battery will reduce the discharge voltage and shorten the discharge time. The internal resistance is mainly affected by the material, manufacturing process, battery structure and other factors.
In the process of battery use, with the extension of battery life, the battery may accumulate inert lead sulfate, and the internal resistance of the battery will gradually increase. Therefore, the detection of the internal resistance of the battery can be used as an important indicator to monitor the sulfation status of the battery, and the performance status of the battery can be preliminarily determined by the change of the internal resistance. The performance of the battery needs to be finally confirmed through the battery capacity test (discharge test).

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