1、18 Bit AD Converter Chip: This battery internal resistance meter uses an 18 bit AD converter chip with high resolution to ensure accurate voltage and resistance measurements, making it very practical. 2、High Resolution: This battery internal resistance test meter uses a dual five digits display and the measurement resolution is up to 0.0001mΩ and 0.1mv, the display is very clear and easy to read. 3、Multifunctional: This battery voltage tester analyzer is multifunctional, can be automatically switched between multiple units, has a wide measurement range, and automatically determines and displays battery polarity without distinguishing battery polarity. 4、High Accuracy: This battery internal resistance tester uses a 1KHZ AC current measurement method, which is highly accurate and suitable for measuring all kinds of batteries or battery packs under 100V. 5、Wide Application: This battery voltage tester has a wide range of applications and is equipped with a computer serial connection terminal, which extends the instrument's measurement and analysis functions, is convenient and rugged, and can be used for testing a variety of batteries. Item Type: Lithium Battery Voltage Resistance Tester Material: ABS, Aluminum Alloy Power Supply Current: 50ma-100ma Measurement Parameters: ACR, DCV Measurement Range: R: 0-2000Ω V: 0-±100VDC Resolution: 0.0001mΩ (100μΩ), 0.1mv (100μv) Accuracy: R: ±0.5% V: ±0.5% Testing Speed: 5 times/s Testing Range: Auto Switching Measurement Input: Balanced System Measurement Probe: LCR Kelvin 4 Wires Clamp 1 x Lithium Battery Voltage Resistance Tester 1 x USB Cable 1 x Battery Holder 1 x Battery Clip Wire 1 x Power Cord 1 x Manual