








⚡ Power Up Your Charging IQ with Pro-Level USB Testing!
The FNIRSI FNB58 USB Tester is a professional-grade multimeter featuring a 2.0-inch TFT LCD and integrated USB-A, Micro-USB, and Type-C ports. It supports advanced fast charge protocols including QC2.0/3.0, PD2.0/3.0, VOOC, and more, with precise 16-bit ADC measurement for voltage, current, power, and ripple. Ideal for tech-savvy professionals, it offers detailed capacity logging, resistance measurement, and onboard temperature monitoring, making it an essential tool for optimizing and troubleshooting USB charging performance.










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