USB Tester Voltmeter Ammeter Power / Capacity / Mobile Power Testing Spares☜

USB Tester Voltmeter Ammeter Power / Capacity / Mobile Power Testing Spares☜

Feature: \n 1. USB power tester can measure USB charging voltage, current and discharge capacity over time.\n2. Such tester can be used to check the performance of USB cables, wall chargers, car chargers and power banks.\n3. Compatible with fast-charger compatible, power tester can work under upto 20V and it does not interfere with fast charge negotiation.\n4. Empty display with memory function after power off, power meter is with high performance according to strict rule.\n5. With reset button, press 3-5 seconds can make that the screen will be cleared . \n\nSpecification: \nItem Type: USB power tester\nModel: KWS-V21\nVoltage: Input / Output Voltage: 3.5-20v, Voltage Resolution: 0.01V\nCurrent: Input / Output Current: 0-3.3A, Current Resolution: 0.01A\nAccuracy: \u00B11%\nLine Loss: Aabout 0.1\u03A9\nIN: Input is connected to the charger's output port. \nRESET: Reset button, press 3-5 seconds, the screen will be cleared. \nOUT: Output terminal is connected to the data line USB port:

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