This document describes the specification of the PZEM-013/015 DC multifunction battery tester, this meter is mainly used to test all kinds of battery's voltage, discharge current, discharge power, discharge impedance, internal resistance, capacity, dump energy, energy consumption and running time, and display the measurement data through LCD screen.Voltage Range 0~200v ( when test under 8V, please use the independent power supply mode)The starting test voltage: 0.05VAccuracy: 1%Display formatLess than 10V display as 9.99VLess than 100V display as 99.9Vmore than the 100V display as 199VDisplay format: 999m, when over the test range or the current is zero, it display"---"Note: before you test the internal resistance, you should preset the full voltage depend on the battery type, after it is full charged, you can use it to test.If it was not full charged, you can set the battery without load voltage to the full voltage, then test.The internal resistance is not a fixed value, the more the battery discharged, the bigger resistance.Style:200AColour:blackMaterial:ABS+electronic componentsPackage Contents:1 * Digital VoltmeterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.