Enhance your charging and voltage monitoring tasks with this advanced USB Voltage Meter, designed for precision, convenience, and multi-functional rapid charging testing. Crafted with durable ABS material, this USB voltmeter model FNB48 supports a wide voltage range from 4 to 24V and delivers ultra-high resolution and accuracy for voltage, current, power, and resistance measurements, making it an essential tool for professionals and tech enthusiasts. Key Features: · Screen Flip Function: Featuring intuitive gravity sensing technology, the screen can be flipped freely to suit your viewing angle. Alternatively, you can disable gravity detection and long press the middle button to manually flip the display for flexible usability. · Differential Pressure Method Measurement: Accurately measure cable resistance using the differential pressure method, allowing you to detect cable performance easily when combined with a constant current load. · Real-Time Monitoring with High Resolution: Effortlessly switch between five or six-digit displays with one key, providing a maximum voltage resolution of 0.00001V. Monitor subtle changes in voltage, current, and power in real-time during charging processes. · Downward Compatible USB 3.0 Interface: Equipped with a USB 3.0 interface and 9-pin design, this meter is backward compatible with USB 2.0, enabling direct testing of charging protocols on various devices without needing an original data cable. · Data Recording & Battery Capacity Calculation: Records up to 10 sets of measurement data, which can be used for battery capacity calculations. This function is integrated into the device, allowing you to multiply the result by 1000 to obtain accurate battery capacity readings. · Easy Reading of E Marker and DASH Line Data: Supports reading of E Marker chip data and DASH line information through connected data cables, simplifying the analysis of quick charging features. Specifications: · Material: ABS · Model: FNB48 · Monitoring Voltage: 4 to 24V · Voltage Resolution: 0.00001V · Voltage Accuracy: ±(0.2%+2) · Monitoring Current: 0 to 6.5A · Current Resolution: 0.00001A · Current Accuracy: ±(0.5%+2) · Monitoring Power: 0 to 156W · Power Resolution: 0.00001W · Power Accuracy: ±(0.5%+2) · Load Equivalent Resistance: 0 to 9999.9Ω · Resistance Resolution: 0.0001Ω · Resistance Accuracy: ±(0.5%+2) · Capacity Range: 0 to 9999.99Ah · Power Consumption Range: 0 to 9999.99Wh · Cable Resistance: 0 to 9999.99Ω · D+ / D- Voltage: 0 to 3.3V · D+ / D- Voltage Resolution: 0.001V · D+ / D- Voltage Accuracy: ±(1.0%+2) · Device Temperature Display: ℃ or ℉ selectable · Temperature Resolution: 1℃ or 1℉ · Temperature Accuracy: ±(1.2%+3) or ±(1.2%+4) Package Includes: · 1 x USB Voltage Meter This multifunctional USB Voltage Meter offers precise measurements, comprehensive protocol compatibility, and convenient features in a compact design, ideal for rapid charging diagnostics, cable testing, and battery capacity evaluation. Elevate your electronic testing capabilities with this reliable and highly accurate USB charging tester.