- Real-time monitoring: The LCD display on this USB voltage meter provides simultaneous voltage and current readings, making it a compact power meter for USB sources. - Plug-and-play: This USB tester works right out of the box with no setup required, enabling quick diagnostics of USB devices and chargers. - User-friendly digital tester: Designed for simple operation, it is easy to use for all users and scenarios. - Broad compatibility and performance: Compatible with a wide range of USB chargers and USB ports, suitable for testing wall adapters, power banks, car chargers, and USB cables. - Use scenarios: - Verify wall charger output to ensure your phone or tablet receives the correct voltage. - Check a power bank’s output while charging a device to monitor stability and current. - Inspect USB cables and ports by observing voltage current under load to detect poor cables or faulty ports.