Battery Internal Resistance Tester This handheld tester is expertly designed for accurately measuring the parameters of a wide range of batteries, including automotive and smaller applications. With cutting-edge 1KHz AC low resistance measurement technology and advanced noise reduction combined with the Kelvin four-terminal connection method, it ensures precise testing by eliminating the influence of wire and contact resistance. It automatically switches between resistance and voltage ranges and can simultaneously measure and display both battery internal resistance and voltage. Featuring a professional, user-friendly design, robust durability, and extended operational time, this tester is an indispensable tool for battery maintenance and troubleshooting. Features: Professional and Accurate Testing: Leveraging 1KHz AC low resistance measurement and Kelvin four-wire detection, the tester offers high-precision internal resistance and voltage readings across a variety of batteries, from lead-acid and lithium to nickel-cadmium and alkaline. Especially effective for automotive battery testing and maintenance across traditional, electric, and new energy vehicles. Humanized Functional Design: With a self-calibration function for maintaining accuracy, users can adjust performance as necessary. Features include a filtering function and dual alarm prompts that automatically check battery internal resistance through clear "nice", "qualified", and "poor" notifications. It supports resistance/voltage automatic switching, covering ranges from 0.000mΩ to 500.0Ω for resistance and 0.000V to ±120V for voltage. 3.2-inch Display & Comfortable Operation: The 3.2-inch screen can display both internal resistance and voltage values at once. The tester simplifies operation with six automatic switches, and it includes a backlit display and LED flashlight for use in low-light settings. Its elegant design and longevity, combined with a user-centric operational interface, make this an excellent tool for testing and maintenance. Quality Material & Powerful Endurance: Encased in sturdy ABS material with a TPR wrap for a comfortable grip, the tester is shock and drop resistant, ensuring stable performance in harsh conditions. It includes a 1200mAh high-capacity lithium battery with a short 2-hour charge time, supporting up to 8 hours of continuous operation for extended field testing. Wide Applicability: Suited for various battery testing scenarios, this tester is a valuable companion for battery maintenance and diagnostics across automotive and small battery usages. Specifications: Name: Battery Internal Resistance Tester Material: ABS + TPR Model: IR500, IR502 (optional) Battery: 1 * 3.7V, 1250mAh lithium battery (included) Display: IR500 3.2-inch TN black and white display, IR502 3.2-inch VA color display (per selection) Voltage Ranges: 0~±120V Internal Resistance Ranges: 0mΩ to 500Ω Maximum Input Voltage: 120VDC Measuring Current: 50mA to 50uAAC Measurement Speed: 3 times/second Measure Signal Frequency: 1KHz Automatic/Manual Voltage Range Selection: Yes Automatic/Manual Resistance Range Selection: Yes Four-line Kelvin Testing Method: Yes User Self-Calibration: Yes Autonomous Factory Recovery: Yes LED Flashlight Function: Yes Automatic Shutdown: Yes Display Size: 55 * 57mm / 2.17 * 2.24in Package Size: 221 * 148 * 50mm / 8.70 * 5.83 * 1.97in Package Weight: 496g / 1.09lb Packing List: IR500: 1 * Battery Internal Resistance Tester 1 * Test Cable 1 * Charging Cable 1 * Manual IR502: 1 * Battery Internal Resistance Tester 1 * Test Cable 1 * Charging Cable 1 * Cloth Bag 1 * Manual
