FNIRSI FNB58 USB Fast Charge Tester

The FNIRSI FNB58 is an advanced USB fast-charge tester and power meter equipped with a 2.0-inch TFT display. It supports real-time monitoring of voltage (4–28V), current (0–7A), and power (0–140W). It is highly regarded for its ability to auto-detect fast charging protocols and log data

Key Characteristics & Technical Specifications
Voltage Range : 4 V to 28V with a resolution of 0.0001V
Current Range: 0 A to 7 A with a resolution of 0.0001 A
Power Range: 0 W to 140 W with a resolution of 0.0001 W
Interface Options: Integrated with Type-C, USB-A, and Micro-USB inputs and outputs for broad hardware compatibility
Protocol Detection: Automatically tests and identifies various fast charging standards including PD 2.0, PD 3.0, PD 3.1, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH, VOOC, and SuperVOOC

Advanced Features
Cable E-Marker Detection: Can query connected USB-C cables to read their power (60W, 100W, 240W) and data-speed capabilities
Ripple Measurement: Monitors high-speed power supply ripple to diagnose clean or noisy power delivery
Curve Display: Supports 4 function curves (Real-time V/I curves, offline curve recording, D+/D- voltage curves, and ripple measurement)
Connectivity: Available in Bluetooth and non-Bluetooth versions; the Bluetooth version allows wireless interfacing with Android apps, while both can connect to a PC for data logging and firmware updates

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