... ,2-19.99V.20-99.9V 2)three internal Resistance testing range:0~199.9m,200~1999m, ( Voltmeter OF INTERNAL BATTERY RESISTANCEModel ... battery terminal voltage andinternal resistance. The internal resistance ismeasured with the international standard ACsignal (1000Hz±10%) by means of ... 2~19.99V)10mV, (20~99.9V)100mVInternal Resistance Measurement Range: 0~199.9m, 200~1,999m, 2~19.99Internal Resistance ...