{"product_id":"usb-voltage-current-meter-battery-capacity-tester-power-banks-chargers","title":"USB Voltage \u0026 Current Meter — Battery Capacity Tester for Power Banks \u0026 Chargers","description":"\u003ch2\u003eUSB Voltage \u0026amp; Current Meter — Battery Capacity Tester for Power Banks \u0026amp; Chargers\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003eUSB power meter\u003c\/strong\u003e measures voltage, current, accumulated capacity (mAh), and elapsed time simultaneously, providing a complete picture of USB power delivery performance. It is the essential tool for verifying power bank actual capacity, testing charger output quality, and monitoring USB device power consumption. Simply plug it inline between charger and device — no wiring or setup required.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e4V – 9V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0A – 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity Range\u003c\/td\u003e\n\u003ctd\u003e0 – 99,999 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime Range\u003c\/td\u003e\n\u003ctd\u003e0 – 99 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eDigital LCD \/ LED (multi-parameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Function\u003c\/td\u003e\n\u003ctd\u003eYes (retains mAh and time data)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eUSB-A inline (male input \/ female output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose This USB Meter?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003e4-in-1 measurement\u003c\/strong\u003e — voltage, current, capacity (mAh), and time on one display\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eMemory function\u003c\/strong\u003e — accumulated mAh and time retained across power cycles\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e±1% accuracy\u003c\/strong\u003e — reliable for power bank capacity verification\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eInline design\u003c\/strong\u003e — no wiring needed, plug between charger and device\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eUp to 3A measurement\u003c\/strong\u003e — covers standard and fast-charge USB outputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePower bank actual capacity measurement and verification\u003c\/li\u003e\n\u003cli\u003eUSB charger output voltage and current testing\u003c\/li\u003e\n\u003cli\u003eUSB device power consumption monitoring\u003c\/li\u003e\n\u003cli\u003eSolar panel USB output performance testing\u003c\/li\u003e\n\u003cli\u003eDIY power bank build quality verification\u003c\/li\u003e\n\u003cli\u003eBattery discharge capacity testing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × USB Voltage \u0026amp; Current Meter with Battery Capacity Tester\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991440707819,"sku":"\u003cnone\u003e","price":11.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/usb-voltage-current-battery-capacity-tester.webp?v=1761807796","url":"https:\/\/keszoox.com\/products\/usb-voltage-current-meter-battery-capacity-tester-power-banks-chargers","provider":"Keszoox","version":"1.0","type":"link"}