Automatic voltage internal resistance tester

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The Automatic Voltage & Internal Resistance Tester is a precision electrical testing instrument designed for rapid and accurate measurement of open-circuit voltage (OCV) and DC internal resistance of lithium-ion battery cells. The system is widely used in battery research laboratories, production lines, and quality control departments to evaluate electrical consistency, detect defective cells, and support battery performance classification and safety assessment.

Application

(1) Open-circuit voltage (OCV) measurement of lithium-ion pouch cells, cylindrical cells, and coin cells.

(2) DC internal resistance measurement for cell grading and sorting.

(3) Incoming inspection of battery cells and semi-finished products.

(4) Quality control during cell production, formation, and aging processes.

(5) Electrical consistency evaluation for batch comparison and statistical analysis.

(6) Screening of abnormal cells with high internal resistance or voltage deviation.

(7) Laboratory research and process validation for battery development.

Standards

(1) IEC 62660-2 – Secondary Lithium-Ion Cells – Reliability and Abuse Testing (reference application).

(2) ASTM E83 – Verification of Linear Displacement Measuring Systems (instrument calibration reference).

(3) ISO 3611 – Verification of Linear Measuring Instruments (instrument calibration reference).

(4) RoHS – Restriction of Hazardous Substances Directive.

(5) CE Certification – Conformité Européenne.

Features

(1) Simultaneous measurement of voltage and internal resistance with high accuracy.

(2) Automated test sequence reduces operator influence and improves repeatability.

(3) Fast measurement suitable for production-line and batch testing.

(4) Wide compatibility with pouch, cylindrical, and coin-type battery cells.

(5) Stable contact design ensures reliable electrical connection.

(6) Built-in data storage and result classification functions.

(7) Digital communication interface for data export and system integration.

(8) Electrical safety protection with overload and short-circuit prevention.

Technical Parameters

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