{"product_id":"mini-usb-power-charging-tester-digital-voltmeter-ammeter","title":"Mini USB Power Tester – Digital Voltmeter \u0026 Ammeter","description":"\n\u003ch2\u003eBS Smart Digital USB Power Charging Tester – Voltmeter \u0026amp; Ammeter in One\u003c\/h2\u003e\n\u003cp\u003eGet instant, accurate readings of your USB charger's voltage and current with this compact \u003cstrong\u003eBS Smart Digital Mobile Power Charging Tester\u003c\/strong\u003e. Designed for hobbyists, electronics enthusiasts, and anyone who wants to verify their charger or power bank is performing correctly, this mini tester plugs directly into any standard USB port for real-time monitoring — no extra cables or setup required.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Measurement:\u003c\/strong\u003e Simultaneously reads voltage (V) and current (A) via built-in voltmeter and ammeter functions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Supports supply voltages from 3.5V to 7V — compatible with most standard USB chargers and power banks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Draw:\u003c\/strong\u003e Operates on just 20mA working current, so it won't skew your readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Mini DIP form factor fits easily in a pocket, tool bag, or desk drawer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Read Display:\u003c\/strong\u003e Clear digital readout lets you check charging status at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Functions reliably from -10°C to +65°C for indoor and outdoor use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Free from hazardous substances for safe everyday handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3.5V – 7V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Current:\u003c\/strong\u003e 20mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +65°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e DIP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're testing a phone charger, checking a portable power bank's output, or diagnosing USB-powered devices, this tester gives you the data you need quickly and accurately. It's an essential addition to any electronics toolkit alongside other handy diagnostic tools.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You Might Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the BS Smart USB Power Charging Tester measure?\u003c\/h4\u003e\n\u003cp\u003eA: The tester measures both voltage (V) and current (A) from a USB power source simultaneously. It functions as a voltmeter and ammeter, giving you a real-time digital readout of your charger or power bank's output performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What USB devices is this tester compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This USB charging tester is compatible with standard USB chargers, power banks, and other USB-powered devices operating within the 3.5V to 7V supply voltage range — which covers the vast majority of everyday USB chargers and mobile power sources.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the USB power tester difficult to use?\u003c\/h4\u003e\n\u003cp\u003eA: Not at all! Simply plug the tester into your USB port or charger, and the digital display immediately shows voltage and current readings. No additional setup, wiring, or software is needed — it's truly plug-and-read convenience.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the BS Smart USB Power Charging Tester measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The tester measures both voltage (V) and current (A) from a USB power source simultaneously. 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