Fnirsi FNAC-28 USB-C and USB-A 2-in-1 Tester

The Fnirsi FNAC-28 tester combines wide measurement capabilities in a lightweight and easily portable device. It supports both USB-A and USB-C connectors and allows you to monitor key power parameters such as voltage, current, power, temperature, energy consumption, and test duration. The USB-C port also supports bidirectional power flow, which is practical when analyzing modern devices using Power Delivery technology.

High measurement accuracy is ensured by a 16-bit analog-to-digital converter, making the tester suitable for service and laboratory use. The device handles current loads up to 6.5 A and power up to 156 W. It automatically recognizes fast-charging protocols including QC 2.0, QC 3.0, AFC, SCP, FCP, Apple 2.4A, VOOC, SVOOC, and PE, so you can quickly verify charger compatibility and its real output.

The Fnirsi FNAC-28 also offers advanced testing functions:

• cable testing, including resistance measurement and current transmission checks,
• load simulation to verify cable or charger behavior under real-world conditions,
• battery capacity testing with time, current, and energy recording,
• storage of up to 5 sets of measured data,
• data display in graphs, including D+/D- line analysis and power instability detection.

For comfortable use, you can adjust display brightness, standby mode timeout, and temperature units °C/°F. The clear menu and 1.06-inch color display make it easy to read values quickly, even during everyday USB accessory testing.