Voltage resistance with the screen at the same time measurement, measurement quickly and steadily. The minimum resolution of up to 0.01 milliohms, easy to test large capacity, high discharge rate low resistance battery. Range can be 200 ohms, can be measured button batteries, 9V laminated battery and other low-capacity small current high internal resistance battery. Voltage, internal resistance test function, respectively, with manual automatic range function. Automatic range switch stable and quick, the measurement shows 4 times per second update, the basic can be locked in about 1S time range stable display. HOLD function to help you lock the display, more convenient reading. Using dot matrix LCD screen. Size font combination, which clearly shows the measurement results, but also display rich content. 2 kinds of display mode. Normal mode with the screen display resistance and voltage, sorting mode shows the interna resistance voltage and the level of battery classification and counting. Voltage measuring range:0-28V Internal resistancemeasuring range:0-200ohm Battery:3.7V, 2000mAh Type:B:With Test Rack Colour:Black Material:Plastic Package Contents: 1 * Internal Resistance Test Instrument 1 * Test Rack Only the above package content, other products are not included. Note: Light reflection 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.