Fnirsi FNB58 USB Voltage and Current Tester

Fnirsi FNB58 USB Voltage and Current Tester

The Fnirsi FNB58 is an advanced USB tester designed to accurately measure voltage, current, power, capacity, and energy consumption of USB-powered devices. With its color IPS display and high measurement precision, it is an ideal solution for analyzing the performance of chargers, power banks, cables, and USB-based electronic devices.

Supporting both USB-A and USB Type-C input/output, the FNB58 is compatible with a wide range of fast charging protocols including PD (Power Delivery), QC (Quick Charge), AFC, and FCP. Real-time graphical display, data logging, and PC connectivity enable in-depth analysis. It is a professional-grade measurement tool for electronics developers, service technicians, and advanced users.

With advanced features such as e-marker reading, cable resistance testing, and charging protocol detection, the FNB58 allows comprehensive testing of all components within the USB ecosystem.

Fnirsi FNB58 Technical Specifications:

• Measurement Types: Voltage, Current, Power, Capacity (mAh), Energy (Wh)

• Input / Output: USB-A and USB Type-C

• Voltage Measurement Range: 4V – 28V

• Current Measurement Range: 0 – 6A

• Maximum Power Support: 140W

• Fast Charging Protocols: PD3.1, QC2.0/3.0, AFC, FCP, SCP, PPS

• Display: Color IPS LCD

• Graph Display: Real-time voltage and current graphs

• Data Logging and PC Software Support

• E-Marker Reading and Cable Resistance Test

Package Contents:

• 1 x Fnirsi FNB58 USB Voltage and Current Tester

• 1 x USB Type-C to Type-C Cable

• 1 x User Manual

Useful Links / Documents:

• Fnirsi FNB58 User Manual (PDF)
• Fnirsi FNB58 Firmware Update
• Fnirsi FNB58 PC Software
• Fnirsi FNB58 Video Tutorial Series

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