Accurately monitor and troubleshoot your USB charging devices with this versatile USB Meter Tester, designed to detect USB charging current, voltage, discharge capacity, quantity of electric charge, power, and timing. Perfect for identifying charging issues with USB cables, wall chargers, and car chargers, this compact tester ensures your devices charge efficiently and safely every time. Key Features: · Comprehensive USB Testing: Measures charging current (0-5.1A), voltage (3V-30V), discharge capacity, electric charge quantity, power (up to 299.999W), and timing, providing detailed insights into your USB charging performance. · QC 2.0/3.0 High Voltage Support: Supports Qualcomm Quick Charge 2.0 and 3.0 protocols for high-voltage testing and features automatic cut-off when devices are fully charged to protect valuable electronics from overcharging. · High-Resolution LCD Display: Equipped with a bright, high-grade LCD screen with low power consumption, clearly showing real-time parameters with precision, including voltage resolution of 0.01V and current accuracy of ±1%. · Multiple Display Modes: Offers three different display modes allowing you to customize how measurement data is viewed for easy monitoring and analysis. · Wide Application: Ideal for testing the capacity and electric energy of power banks, maximum output current of chargers, and evaluating the charging speed and quality of data cables and charging cables. · Portable and User-Friendly Design: Compact dimensions (67 x 24 x 14 mm) and lightweight (25g) make it easy to carry in your pocket or bag. The symmetrical and reversible USB connector allows simple, hassle-free operation. Specifications: · Color: Black · Input/Output Voltage Range: 3V-30V · Voltage Resolution: 0.01V · Current Test Range: 0-5.1A (Precision 0.01A) · Cumulative Capacity Range: 0-99999 mAh (Precision 0.001Ah) · Cumulative Power Range: 0-999999 mWh (Precision 0.001Wh) · Power Calculation Range: 0-299.999 W (Precision 0.001W) · Timing Maximum: 0-999 hours 59 minutes 59 seconds (Accuracy 1 second) · Accuracy: ±1% · Line Loss: 0.1Ω · Item Size: 67 x 24 x 14 mm (2.64 x 0.94 x 0.55 in) · Item Weight: 25g (0.88 oz) Package Includes: · 1 x USB Security Tester This USB Meter Tester is a reliable tool for engineers, technicians, and anyone needing precise measurement of USB power and charging conditions. Its advanced features and compact design make it essential for maintaining optimal charging performance and protecting your devices from electrical issues.