The battery internal resistance tester can measure the battery internal resistance and voltage at the same time, this tool using four-wire test clamp, can better avert the influence of contact resistance and wire resistance, can carry out more accurate measurement. This tool is an indispensable tool in your daily maintenance, come and have a try, it will not let you down.Features:Specifications:Material: ABSType:Type1: Tester+probeType2: Tester+clipType3: Tester+fixtureSpeed: 5 times/secondAdjustment: Correction for resistance and voltage separatelyBasic accurancy:Resistance: 0.5%Voltage: 0.5%Measuring ranges:Resistance: 0.0001m~200Voltage: 0.0001V~±100V direct currentResistance ranges: 6 ranges automatic and manualVoltage ranges: 3 ranges automatic and manualBattery: 1 * lithium battery, 1000mAh (included)Package size: 180 * 90 * 35mm / 7.1 * 3.5 * 1.4inPackage weight: 250g / 8.8ouncePacking list:Type1:1 * Tester1 * ProbeorType2:1 * Tester1 * CliporType3:1 * Tester1 * Fixture