FNIRSI FNB58 USB port tester black

The FNIRSI FNB58 is a USB tester for checking power parameters, protocol compatibility and the quality of chargers and cables. Its bright 2-inch LCD shows voltage, current, power and charging waveforms in real time, with a resolution of 0.0001, so even small fluctuations during charging become visible. It supports a wide range of fast-charging standards, including PD 2.0 and 3.0, PPS, QC 2.0 and 3.0, FCP, SCP, AFC, PE, DASHVOOC and SuperVOOC, and detects the active protocol automatically.

The tester helps assess the quality of power adapters by showing ripple levels, and it can read the data of PD cables with E-Marker chips and measure their internal resistance. Offline curve recording of up to 9 hours allows the full charging process to be analysed afterwards. Bluetooth connectivity and computer support without driver installation make data monitoring convenient. The device also records charge and discharge data for up to 10 battery sets and estimates battery capacity.