Description: 【Versatile Battery Testing】: The Voltage Internal Resistance Battery Tester is designed to measure a wide range of batteries, including carbon, alkaline, and vehicle batteries (up to 110V), making it highly practical for various applications 【High Precision Measurement】: Utilizing a 1Khz AC sine wave measurement method with a voltage range of 0 - 100V and resistance range of 0 - 100 ohms, this Battery Voltage Meter ensures accurate detection of battery capacity and internal resistance 【Innovative Connection】: The Car Battery Tester employs a four wire connection method to eliminate the influence of wire and resistance, significantly enhancing measurement accuracy 【User Friendly Design】: Featuring an foldable stand for convenience during use, the Digital Battery Analyzer allows users to adjust multiple groups for efficient batch testing or accurate identification of faulty batteries 【Details】: Made from strong ABS engineering plastic with dimensions of 5.31inchx3.15inchx0.94inch Specification: 13.5cmx8cmx2.4cm/5.31inchx3.15inchx0.94inch Package Includes: 1 Voltage Internal Resistance Battery Tester  1 Test Line 1 User Manual Note: Please allow slightly errors due to manual measurement and different packages.