FNIRSI FNB48 BT USB Port Tester with Bluetooth

The FNIRSI FNB48 BT is a versatile USB port tester designed for professionals and enthusiasts who need to analyze and troubleshoot USB power delivery and fast charging protocols. With Bluetooth 5.0 connectivity, it pairs with Windows PC and Android apps for real-time data logging and analysis. The device supports a wide range of fast charge protocols including QC2.0/3.0/4.0, PD2.0/3.0, PPS, Apple 2.4A, AFC, FCP, SCP, and VOOC/DASH, making it an essential tool for testing chargers, power banks, and USB cables.

Advantages

Equipped with a 1.77-inch TFT color LCD display, the FNB48 BT provides clear readings of voltage, current, power, capacity, and internal resistance. Its high measurement resolution (0.00001V and 0.00001A) ensures precise diagnostics. The built-in E-marker cable detection and PD protocol trigger simplify testing of USB-C cables and PD adapters. Data logging with 100 samples per second allows detailed analysis of power delivery behavior over time.

Suitable for

• Testing USB chargers and power adapters for voltage and current stability
• Verifying fast charge protocol compatibility of smartphones, tablets, and laptops
• Diagnosing USB cable quality and detecting E-marked cables
• Evaluating power bank capacity and discharge performance
• Monitoring USB power delivery in R&D and repair labs

Key specifications

• Display: 1.77-inch TFT Color LCD, 160x128 pixels
• Input Voltage: 4-28V DC
• Input Current: 0-7A DC
• Power Measurement: 0-120W
• Voltage Resolution: 0.00001V
• Current Resolution: 0.00001A
• Energy Range: 0-99999Wh
• Capacity Range: 0-99999mAh
• Load Internal Resistance: 0-9999.9Ω
• D+/D- Voltage: 0-3.3V
• Supported Protocols: QC2.0/3.0/4.0, PD2.0/3.0, PPS, Apple 2.4A, AFC, FCP, SCP, VOOC/DASH
• Connectivity: Bluetooth 5.0
• PC Software: Windows, Android app
• Data Logging: Yes, internal storage
• Sampling Rate: 100 samples/second
• Input Ports: USB-A Male, USB-C Male, Micro USB
• Output Ports: USB-A Female, USB-C Female

Recommendations

For comprehensive USB power testing, pair the FNB48 BT with a variable load or a known reference charger. Use the Bluetooth app for extended data logging and firmware updates. This tester is ideal for field service technicians, hardware engineers, and tech enthusiasts who demand accurate and reliable USB diagnostics.