USB Tester Voltmeter Ammeter Power Capacity Mobile Power Testing Tool for Wall Chargers

Feature: 1. USB power tester can measure USB charging voltage, current and discharge capacity over time. 2. Such tester can be used to check the performance of USB cables, wall chargers, car chargers and power banks. 3. Compatible with fastcharger compatible, power tester can work under upto 20V and it does not interfere with fast charge negotiation. 4. Empty display with memory function after power off, power meter is with high performance according to strict rule. 5. With reset button, press 35 seconds can make that the screen will be cleared . Specification: Item Type: USB power tester Model: KWSV21 Voltage: Input Output Voltage: 3.520v, Voltage Resolution: 0.01V Current: Input Output Current: 03.3A, Current Resolution: 0.01A Accuracy: +1percent Line Loss: Aabout 0.1 Ohm IN: Input is connected to the charger"s output port. RESET: Reset button, press 35 seconds, the screen will be cleared. OUT: Output terminal is connected to the data line USB port. Input Voltage Display Window: 3.520V Charging Current Display Window: 03.3A(accuracy + 1percent ) Battery Capacity Display Window: 099999mAh Working Time Display Window: 099min working time and empty display with memory function after power off Voltage Range: 3.520V Maximum Current: 3.3A Resolution: 0.01V, 0.01A, 1mAh. Package List: 1 x USB Power TesterUSB power tester can measure USB charging voltage, current and discharge capacity over time. Such tester can be used to check the performance of USB cables, wall chargers, car chargers and power banks. Compatible with fastcharger compatible, power tester can work under upto 20V and it does not interfere with fast charge negotiation. Empty display with memory function after power off, power meter is with high performance according to strict rule. With reset button, press 35 seconds can make that the screen will be cleared .