{"product_id":"10-in-1-usb-digital-tester-voltmeter-ammeter-power-bank-charger","title":"10-in-1 USB Digital Tester Voltmeter Ammeter for Power Bank \u0026 Charger","description":"\u003ch2\u003e10-in-1 USB Digital Tester — Voltmeter, Ammeter \u0026amp; Power Bank Analyzer\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003e10-in-1 USB digital tester\u003c\/strong\u003e is an all-in-one inline measurement tool for USB power circuits. Plug it between any USB source and load to instantly measure \u003cstrong\u003evoltage, current, power, capacity, energy, time, temperature\u003c\/strong\u003e, and more — essential for testing power banks, chargers, cables, and USB-powered devices.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e4V – 20V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0 – 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Range\u003c\/td\u003e\n\u003ctd\u003e0 – 60W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity Range\u003c\/td\u003e\n\u003ctd\u003e0 – 99999mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Range\u003c\/td\u003e\n\u003ctd\u003e0 – 9999Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% ±2 digits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1% ²2 digits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e0°C – 80°C (ambient)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eOLED \/ LCD multi-parameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUSB-A input + USB-A output (pass-through)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003e10 Measurement Functions\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eVoltage (V)\u003c\/li\u003e\n\u003cli\u003eCurrent (A)\u003c\/li\u003e\n\u003cli\u003ePower (W)\u003c\/li\u003e\n\u003cli\u003eCapacity (mAh)\u003c\/li\u003e\n\u003cli\u003eEnergy (Wh)\u003c\/li\u003e\n\u003cli\u003eCharging time (h:m:s)\u003c\/li\u003e\n\u003cli\u003eAmbient temperature (°C\/°F)\u003c\/li\u003e\n\u003cli\u003eUSB D+\/D− voltage (charging protocol detection)\u003c\/li\u003e\n\u003cli\u003eCable resistance (Ω)\u003c\/li\u003e\n\u003cli\u003eCharge cycle count\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eWhy Choose This USB Tester?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 Parameters in One\u003c\/strong\u003e — Replaces multiple meters for USB power analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePass-Through Design\u003c\/strong\u003e — Inline measurement without interrupting charging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocol Detection\u003c\/strong\u003e — Identifies QC2.0\/QC3.0\/Apple\/Samsung charging modes via D+\/D− voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity Accumulation\u003c\/strong\u003e — Tracks total mAh delivered to verify power bank capacity claims\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable\u003c\/strong\u003e — Pocket-sized for field testing and lab use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePower bank capacity verification (actual vs. rated mAh)\u003c\/li\u003e\n\u003cli\u003eUSB charger output quality testing\u003c\/li\u003e\n\u003cli\u003eUSB cable resistance and voltage drop measurement\u003c\/li\u003e\n\u003cli\u003eFast charging protocol identification (QC, PD, Apple)\u003c\/li\u003e\n\u003cli\u003eArduino\/Raspberry Pi USB power supply monitoring\u003c\/li\u003e\n\u003cli\u003eBattery-powered device current consumption profiling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can this tester measure USB-C power?\u003c\/strong\u003e\u003cbr\u003eA: This model uses USB-A connectors. For USB-C PD testing, use a USB-C variant tester.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it work with Quick Charge 3.0?\u003c\/strong\u003e\u003cbr\u003eA: Yes — it passes through QC3.0 voltage negotiation and displays the negotiated voltage on D+\/D− channels.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× 10-in-1 USB Digital Tester\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"KWS-MX18L White","offer_id":46991486517483,"sku":"14:1202#KWS-MX18L White","price":20.16,"currency_code":"USD","in_stock":true},{"title":"KWS-1802C Black","offer_id":46991486550251,"sku":"14:4044226#KWS-1802C Black","price":25.08,"currency_code":"USD","in_stock":true},{"title":"KWS-1802C White","offer_id":46991486583019,"sku":"14:351074#KWS-1802C White","price":25.08,"currency_code":"USD","in_stock":true},{"title":"KWS-MX18L Black","offer_id":46991486615787,"sku":"14:350852#KWS-MX18L Black","price":20.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/usb-10in1-digital-tester.webp?v=1761538989","url":"https:\/\/keszoox.com\/products\/10-in-1-usb-digital-tester-voltmeter-ammeter-power-bank-charger","provider":"Keszoox","version":"1.0","type":"link"}