The FNIRSI FNAC-28 is a versatile USB-A and USB-C port tester that combines voltage, current, power measurement functions, and fast charging support. It is designed for testing chargers, cables, powerbanks, and other devices powered by USB ports.

Main features:

• Two measurement inputs for simultaneous testing of charging parameters.
• Color OLED display showing input voltage, current, and power in real-time.
• Measurement accuracy with built-in 16-bit Analog-to-Digital Converter (ADC).
• Support for current loads up to 6.5 A with bidirectional current flow via USB-C port.
• Automatic detection of fast charging protocols such as QC 2.0 and QC 3.0.

Additionally, the cable testing function detects faults and measures cable resistance. The device records up to five rows of measurement data for assessing battery wear. The screen brightness and standby timeout can be adjusted, as well as the temperature unit (°C/°F).

Technical specifications:

• Model: FNAC-28
• Display: 1.06 inches
• Voltage monitoring range: 4-24 V
• Voltage resolution: 0.001 V
• Voltage measurement accuracy: ±(0.2‰ + 2)
• Current monitoring range: 0-6.5 A
• Current resolution: 0.001 A
• Current measurement accuracy: ±(0.2‰ + 2)
• Power monitoring range: 0-156 W
• Power resolution: 0.001 W
• Power measurement accuracy: ±(0.2‰ + 2)
• Temperature measurement (°C): Resolution 1°C, accuracy ±(1.2% + 3)
• Data refresh time: 1 second
• Dimensions: 73 × 36 × 12 mm
• Weight: 21 g