Voltmeter of internal battery resistance is mainly used to measure battery terminal
voltage and internal resistance.The internal resistance is measured with the
international standard AC signalby means of four-wire method to ensoure the impact of
the test probe of the contact resistance of the instrument,the wire and battery
output terminal on the measured value,and the battery voltage can be measured at the
same time.It is applicable for measurement of internal resistances of lithium-ion,Ni-CD,Ni-MH,Lithium polymer,lithium cells.
