IR MACHINE (BIG) (100a)

The IR Tester & Voltage Checking Machine is a versatile and high-precision diagnostic tool engineered for the rapid testing of internal resistance (IR) and voltage (OCV) in lithium-ion batteries, battery packs, and modules. Designed for integration into battery manufacturing lines, quality control labs, and R&D environments, this compact and efficient machine ensures accurate and repeatable results for various cylindrical and prismatic cells. Whether you're conducting incoming quality inspection (IQC), cell sorting, or battery grading, this machine is a critical component for any workflow requiring precise IR and voltage data — helping you detect faults, match cells, and ensure pack uniformity for optimal performance and safety. Key Features High-Precision TestingAccurately measures internal resistance (in milliohms) and open-circuit voltage (OCV) with high-speed microprocessor control and Kelvin 4-wire technology. Ultra-Fast MeasurementTest time of less than 20 milliseconds per cell, making it suitable for high-throughput production lines and real-time sorting machines. Wide Measurement RangeSupports voltage testing up to 20V and internal resistance from 0.1mΩ to 200mΩ, ideal for single cells and battery packs. Real-Time Digital DisplayBright and intuitive LED display shows voltage and resistance values simultaneously for instant decision-making and troubleshooting. Automation-ReadyIntegrates easily into automated cell sorting systems or QC stations using RS232 or USB interface. Compatible with All Cell TypesSuitable for 18650, 21700, 32700, prismatic cells, and custom battery packs — a universal solution for all battery testing needs. Auto Zeroing & CalibrationBuilt-in self-calibration maintains testing accuracy over time without the need for manual adjustments. Compact & PortableLightweight and space-saving design fits into any testing station, from manual inspection desks to automated conveyors. Technical Specifications Function Internal Resistance & Voltage Measurement Voltage Range 0 – 20V DC Voltage Accuracy ±0.5 mV Resistance Range 0 – 200 mΩ Resistance Accuracy ±0.5% ±2 digits Test Speed < 20ms per cell Connection Method Kelvin 4-Wire (High Accuracy) Display LED Dual Display (OCV & IR) Communication Interface RS232 / USB Power Supply AC 220V, 50Hz Dimensions Approx. 260mm × 210mm × 100mm Weight Approx. 3.5 kg Applications Cell Matching & SortingMatch cells with similar resistance and voltage for high-quality pack assembly. Production Line IntegrationUse with automated battery grading systems for real-time testing. Lab & R&D TestingValidate prototype cells and study degradation over multiple charge/discharge cycles. Incoming Quality ControlDetect faulty or off-spec cells before use in critical applications like EVs or ESS. Why Choose BESD's IR Tester & Voltage Machine? Ultra-fast, accurate measurements Compact and integration-friendly design Suitable for all lithium battery types Ideal for sorting, R&D, and quality control Trusted by battery manufacturers and labs worldwide