FNIRSI FNB48S USB Tester – High-Precision Fast Charge Power Meter for Voltage, Current & Charging Speed Monitoring

The FNIRSI FNB48S USB Tester is a professional-grade fast charge power meter designed for precise monitoring of voltage, current, power, capacity, and charging speed across a wide range of USB devices. Ideal for testing mobile phones, tablets, laptops, power banks, and chargers, it supports multiple fast-charging protocols including PD, QC, and more, making it a must-have tool for electronics enthusiasts, technicians, and product developers.

Equipped with a high-resolution color LCD display, the FNB48S offers clear, real-time data visualization, allowing you to quickly detect performance issues and verify charging efficiency. The device supports bidirectional measurement, enabling testing in both input and output directions without complicated setups.

With its intelligent detection system, the FNB48S not only measures standard USB outputs but also supports Type-C, Micro USB, and USB-A connections, ensuring universal compatibility. Its compact and portable design makes it perfect for both lab and field use, while its rugged build ensures durability over long-term operation.

Key Features:

• High-Precision Measurement – Accurately monitors voltage (V), current (A), power (W), capacity (mAh), and energy (Wh).

• Multiple Fast-Charge Protocols – Supports PD, QC, FCP, AFC, SCP, VOOC, and other mainstream fast-charging standards.

• Color LCD Display – High-resolution screen for clear and detailed real-time data visualization.

• Bidirectional Measurement – Test both input and output power for complete analysis.

• Wide Compatibility – Works with USB-A, Type-C, and Micro USB devices.

• Data Logging Function – Records historical data for performance tracking and troubleshooting.

• Compact & Durable – Lightweight design with robust construction for long-term use.

Specifications:

• Model: FNIRSI FNB48S

• Voltage Range: 4.5V – 30V

• Current Range: 0 – 6.5A

• Power Range: 0 – 200W

• Capacity Measurement: 0 – 99999mAh

• Energy Measurement: 0 – 9999.99Wh

• Display: 1.77-inch Color LCD

• Interface: USB-A, Type-C, Micro USB

• Measurement Direction: Bidirectional

• Fast-Charge Protocols: PD, QC2.0/3.0/4.0, FCP, AFC, SCP, VOOC, DASH, and more

• Data Storage: Supports offline data logging

• Dimensions: Compact and portable design

• Weight: Lightweight for easy portability

This FNIRSI FNB48S USB Tester is the perfect solution for anyone who needs accurate, fast, and reliable charging performance analysis—from professional repair shops to DIY electronics hobbyists.