Features: The Internal Resistance Meter delivers laboratory grade accuracy with ±0.5% voltages/resistance measurement and ±0.01Ω precise probe, featuring Kelvin 4 wire technology to eliminate interferences from leads resistance for reliabled battery diagnostics. Boasting a color screen with data retention function and preset comparison groups, this auto ranging tester enables fast batch analysis through its computer exportable test records. Designed for battery engineers, and EV maintenance teams requiring professional equipment for cell manufacturing, and industrial battery health monitoring. Perfect for laboratory research, production line quality assurances, and field testing of lithium batteries, power banks, and solar energy storage units across temperatures from 10℃ to +45℃. Enhanced with corrosions resistant probes and adjustable 50cm extension, this toolkit ensures safe measurements in challenging environments through patented anti short circuit grounding technology. Specifications: Component: PVC, copper Length:Approx. 80cm/31.5inch Electrical Resistance:0mΩ-200Ω Styles: Internal resistor probe/Internal resistor Kelvin clip Package Includes: 1pcs Battery Internal Resistance Probe note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.