Specifications:Material: plasticColor: blackSize: 84*32*152mmPower supply voltage: DC9V power supply voltage adapter (or 9V battery)Display voltage: DC 0~26.00V Display resolution 0.01VDisplay resistance: 1.00 m~3000.00 m Display resolution 1 mAC current frequency 1KHZMaximum power: <=1W Features:BVIR battery voltage internal resistance tester is a high-precision measuring instrument specially designed for secondary batteries (including lead acid, nickel cadmium, nickel metal hydride, lithium ion, lithium polymer battery). It is a new type of battery internal resistance test using alternating current. The instrument can test the open circuit voltage and AC internal resistance of the battery, and has the characteristics of simple operation, reliable use and high performance-price ratio.It has the characteristics of simple operation, practical and reliable. The maximum measurable internal resistance is 3000m. The internal resistance of the battery can be measured and the battery voltage is multi-purpose.In addition, it can test milliohm series sampling resistors, constant copper resistors, etc., which are widely used in scientific research institutions, production, and secondary battery distribution.