{"product_id":"usb-power-meter-voltage-current-tester-pd-qc3-hd-display","title":"USB Power Meter Voltage Current Tester | PD QC 3.0 HD Display","description":"\u003ch2\u003eUSB Power Meter with 1.77\" HD Display — Monitor Voltage, Current \u0026amp; Fast Charge Protocols in Real Time\u003c\/h2\u003e\n\u003cp\u003eTake full control of your charging setup with this compact \u003cstrong\u003eUSB Power Meter Voltage \u0026amp; Current Tester\u003c\/strong\u003e. Featuring a vibrant \u003cstrong\u003e1.77-inch TFT HD display\u003c\/strong\u003e, this pocket-sized device gives you instant, accurate readings of voltage, current, power, energy consumption, capacity, and cable resistance — all in one tester. Whether you're a tech enthusiast, electronics DIYer, or simply want to verify your chargers and cables are performing as expected, this tool delivers the data you need.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1.77\" TFT HD Display:\u003c\/strong\u003e Real-time readouts of voltage, current, and power keep you informed of your charging status at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Charge Protocol Detection:\u003c\/strong\u003e Fully compatible with \u003cstrong\u003ePD, QC 2.0, QC 3.0\u003c\/strong\u003e, and other fast-charging protocols — works across a wide range of modern devices and chargers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e7 Selectable Display Interfaces:\u003c\/strong\u003e Switch between intuitive views to match your monitoring needs, making operation simple and personalized.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Data Monitoring:\u003c\/strong\u003e Simultaneously tracks voltage, current, power, fast-charge protocol status, energy consumption (Wh), and capacity (Ah) for a complete picture of charging performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Resistance Measurement:\u003c\/strong\u003e Uses the voltage-drop method to automatically calculate USB cable resistance — helping you identify low-quality or degraded cables that reduce charging efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong Recording Time:\u003c\/strong\u003e Logs device operation for up to 99 days, 23 hours, 59 minutes, and 59 seconds; recording time up to 999 hours, 59 minutes, 59 seconds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Slim 65 × 35 × 12.5 mm form factor fits easily in any toolkit or pocket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitoring Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 4–24V | Resolution: 0.00001V | Accuracy: ±(0.2%+2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitoring Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–6.5A | Resolution: 0.00001A | Accuracy: ±(0.5%+2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitoring Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–156W | Resolution: 0.00001W | Accuracy: ±(0.5%+2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eD+\/D- Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–3.3V | Resolution: 0.001V | Accuracy: ±(1.0%+2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–9999.99Ah | Resolution: 0.00001Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnergy Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–9999.99Wh | Resolution: 0.00001Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–9999.9Ω | Resolution: 0.0001Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevice Operating Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 99 days 23 hrs 59 min 59 sec | Resolution: 1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecording Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 999 hrs 59 min 59 sec | Resolution: 1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 × 35 × 12.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot included \/ not required (powered via USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× USB Power Meter Voltage \u0026amp; Current Tester\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDue to lighting and screen variations, the actual product color may differ slightly from images.\u003c\/li\u003e\n  \u003cli\u003ePlease allow 1–10 mm variance due to manual measurement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on USB charging standards and electrical safety, visit the U.S. Consumer Product Safety Commission (CPSC) and the NIST Electrical Measurements resource.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What fast-charge protocols does this USB power meter support?\u003c\/h4\u003e\n\u003cp\u003eA: This USB power meter supports \u003cstrong\u003ePD (Power Delivery), QC 2.0, and QC 3.0\u003c\/strong\u003e fast-charging protocols, as well as other common charging standards, making it compatible with the vast majority of modern smartphones, tablets, laptops, and chargers.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this tester measure the resistance of my USB cable?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The tester uses the \u003cstrong\u003evoltage-drop method\u003c\/strong\u003e to automatically measure USB cable resistance (0–9999.9Ω with 0.0001Ω resolution). This makes it easy to identify cables that may be degrading charging efficiency due to high resistance.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this USB power meter require batteries?\u003c\/h4\u003e\n\u003cp\u003eA: No batteries are required. The device is powered directly through the USB connection being tested.\u003c\/p\u003e\n\u003ch4\u003eQ: How many display interfaces does the tester have?\u003c\/h4\u003e\n\u003cp\u003eA: It offers \u003cstrong\u003e7 selectable display interfaces\u003c\/strong\u003e, allowing you to customize the readout view to suit your specific monitoring needs — from a simple voltage\/current display to comprehensive multi-parameter dashboards.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum voltage and current this meter can monitor?\u003c\/h4\u003e\n\u003cp\u003eA: The meter monitors voltages from \u003cstrong\u003eDC 4V to 24V\u003c\/strong\u003e and currents from \u003cstrong\u003e0 to 6.5A\u003c\/strong\u003e, supporting power monitoring up to \u003cstrong\u003e156W\u003c\/strong\u003e — covering the full range of USB-C PD and QC fast chargers.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What fast-charge protocols does this USB power meter support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This USB power meter supports PD (Power Delivery), QC 2.0, and QC 3.0 fast-charging protocols, as well as other common charging standards, making it compatible with the vast majority of modern smartphones, tablets, laptops, and chargers.\"}}, {\"@type\": \"Question\", \"name\": \"Can this tester measure the resistance of my USB cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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