Green Energy Experts Solution Private Limited

We hold expertise in offering the wide gamut of Spot Welding Machine in the industry. This product is manufactured using high-grade input factors as per the preset industry norms.

Fast & Accurate Internal Resistance and Voltage Measurement for Battery Quality Control
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 Testing
Accurately measures internal resistance (in milliohms) and open-circuit voltage (OCV) with high-speed microprocessor control and Kelvin 4-wire technology.

Ultra-Fast Measurement
Test time of less than 20 milliseconds per cell, making it suitable for high-throughput production lines and real-time sorting machines.

Wide Measurement Range
Supports voltage testing up to 20V and internal resistance from 0.1mΩ to 200mΩ, ideal for single cells and battery packs.

Real-Time Digital Display
Bright and intuitive LED display shows voltage and resistance values simultaneously for instant decision-making and troubleshooting.

Automation-Ready
Integrates easily into automated cell sorting systems or QC stations using RS232 or USB interface.

Compatible with All Cell Types
Suitable for 18650, 21700, 32700,

Auto Zeroing & Calibration
Built-in self-calibration maintains testing accuracy over time without the need for manual adjustments.

Compact & Portable
Lightweight 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 & Sorting
Match cells with similar resistance and voltage for high-quality pack assembly

Suitable for all lithium battery types

Ideal for sorting, R&D, and quality control

Trusted by battery manufacturers and labs worldwide