Is the internal resistance of the battery in the battery, and a current flows through the battery internal resistance of the subject, the general resistance, AC and DC resistance due to the internal resistance of the rechargeable battery is small, the DC resistance measured when the electrode polarization capacitance , the polarization resistance, so its true value can not be measured, and the measured resistance can avoid the impact of their exchange polarization resistance, draw the true value.
AC resistance test method: use a battery equivalent to an active resistance features, the battery a 1000HZ, constant current of 50mA to accurately measure the resistance of its voltage rectifier filter and a series of sample processing.
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