The V321 is designed for the modern driver and technician who values speed and clinical accuracy. By merging full OBDII diagnostic capabilities with an advanced battery analyzer, this tool eliminates the guesswork associated with engine stalls and "no-start" conditions. Whether you are analyzing fuel trims during a road test or conducting a routine battery health audit, the V321 provides the professional-grade data required for expert maintenance.

Elite 2-in-1 Diagnostic Intelligence

• Comprehensive Engine Management: Effortlessly read and Clear Engine Fault Codes and perform a Fault Code Inquiry to instantly understand the root cause of the "Check Engine" light.

• Precision 12V Battery Testing: Includes a dedicated 12V Battery Test that evaluates overall health and starting performance, ensuring your vehicle's electrical foundation is reliable.

• Visual Performance Tracking: Features a Real-Time Curve Display and live data streaming that transforms complex sensor telemetry into intuitive, easy-to-read graphs.

• Deep-System Data Capture: Access Freeze-Frame Analysis to see exactly what the engine was doing at the moment a fault occurred, and verify emissions compliance with I/M Readiness and EVAP System Checks.

• Oxygen Sensor Diagnostics: Conduct specialized Oxygen Sensor Testing to ensure peak fuel efficiency and maintain environmental standards.

• Cloud Print & Data Storage: Features Cloud Print capability and data storage for detailed test reports, allowing you to save or share your diagnostic history for future review.

Hardware & Professional Ergonomics

• Vivid 2.4-Inch Color Display: The high-contrast screen ensures that real-time curves and diagnostic reports are perfectly legible in any workshop or roadside environment.

• Standalone Reliability: Powered directly by your vehicle’s OBDII port; no batteries or external power sources are needed for immediate "plug-and-play" operation.

• Global Multilingual Support: Fully localized for international use, supporting English, German, French, Spanish, Italian, Russian, Chinese, Japanese, Polish, and Portuguese.

• Compact & Rugged Design: The lightweight, portable housing is built for the rigors of a garage environment and fits easily in a glovebox for rapid access during emergencies.

Technical Specifications

The Intelligent Solution for Total Vehicle Health

The CHEPQ V321 proves that a reliable battery tester and engine diagnostics tool is an essential part of proactive vehicle care. By combining real-time engine monitoring with clinical battery analysis and cloud reporting, it empowers you to manage your vehicle's performance with total professional confidence.

Take command of your vehicle’s engine and electrical systems with the V321—the fast, accurate, and multifunctional solution for modern automotive maintenance.