---
product_id: 508069495
title: "USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0"
brand: "fnirsi"
price: "$3158"
currency: MXN
in_stock: true
reviews_count: 6
category: "Fnirsi"
url: https://www.desertcart.mx/products/508069495-usb-tester-4-28v-7a-lcd-usb-a-and-c
store_origin: MX
region: Mexico
---

# Supports QC2.0/QC3.0, PD2.0/3.0 fast charge protocols 2.0-inch TFT LCD display 16-bit ADC with up to 4M sps sampling rate USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0

**Brand:** fnirsi
**Price:** $3158
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Tech IQ with Pro-Level USB Testing!

## Quick Answers

- **What is this?** USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 by fnirsi
- **How much does it cost?** $3158 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/508069495-usb-tester-4-28v-7a-lcd-usb-a-and-c)

## Best For

- fnirsi enthusiasts

## Why This Product

- Trusted fnirsi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Crystal-Clear 2.0" TFT Display:** Instantly visualize voltage, current, and power with sharp, easy-to-read data.
- • **Precision 16-bit ADC Measurement:** Ultra-accurate voltage, current, and ripple detection for professional-grade diagnostics.
- • **Universal Fast-Charge Protocol Support:** Seamlessly triggers and monitors QC, PD, VOOC, and more for next-gen charging tech.
- • **Comprehensive Multi-Parameter Monitoring:** Track voltage, current, resistance, capacity, and cable chip data all in one sleek device.
- • **Smart Data Recording & Waveform Analysis:** Capture high-speed ripple and low-speed waveform data to stay ahead in device testing.

## Overview

The FNIRSI FNB58 USB Tester is a compact, multi-interface digital multimeter featuring a 2.0-inch TFT LCD for real-time voltage, current, and power monitoring. It supports a wide range of fast charging protocols including QC2.0/3.0 and PD2.0/3.0, equipped with a high-precision 16-bit ADC and advanced sampling rates up to 4 million samples per second. Designed for tech professionals and enthusiasts, it offers detailed cable diagnostics, waveform analysis, and smart data recording in a lightweight, portable form factor.

## Description

FNB58 USB tester is a reliability and safety USB voltage andcurrent detection meter and a mobile communication terminal fast chargingtrigger.It has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface.Use external 16-bit ADC, PD protocol physical chip.It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and U disks.It can be used to measure the charging power of mobile phones and the input and output of mobile power supplies. It can be used to test the fast charging protocol of chargers.This instruction manual includes relevant safety information, warningtips and solutions to common abnormal situations. Please read the relevantcontent carefully and strictly abide by all warnings and precautions.Do not connect the monitoring interface to a power supply exceeding 28V.Do not connect the PC connection port to a power source exceeding 16v.Only one pair of monitoring interfaces (one input port,one outputport) can work at the same time. When there is a pair of monitoring interfaces working, it is forbidden to connect to the equipment onother monitoring interfaces. (Except the PC connection port, the PC port can be connected to an external power supply).When using the fast charge trigger module,please do not connect equipment that cannot withstand high voltage to any monitoring interface.After using the PD trigger/monitor/conversion/read E-Marker cablefunction, please turn the PD communication switch in the lower rightcorner back to the OFF position.Do not charge the phone after the fast charge is triggered.

Review: Top in the market - Excellent product
Review: Produto de excelente qualidade, ótimo acabamento e muito preciso

## Features

- 【LCD Display USB Tester】FNIRSI FNB58 has a 2.0-inch TFT LCD display, integrated USB-A, Micro-USB, Type-C interface. It is a USB voltage andcurrent detection meter and a mobile communication terminal fast charging trigger with gravity sensor
- 【Multifunction USB Digital Tester】FNB58 uses external 16-bit ADC, PD protocol physical chip. FNB58 USB tester can monitor the voltage, current, power, resistance, capacity, D+/D- voltage etc, it can be used to test the fast charging protocol of chargers
- 【Fast Charge Protocol Trigger Detection】FNB58 supports QC2.0/QC3.0, FCP/SCP, AFC, PD2.0/3.0, VOOC/WARP, Super VOOC 1.0/2.0 trigger. The above protocols all support automatic monitoring. MTK-PE automatic detection. Support QC2.O->PD2.0 protocol conversion
- 【Parameter Recording】The highest six-digit display of voltage, current and power. 10 sets of switchable capacity, power etc. Support low-speed waveform drawing, 2 sps-100 sps sampling rate. Support high-speed ripple drawing, up to 4 M sps sampling rate
- 【USB tester detection function】The resistance measurement of the wire by the differential pressure method. E-Marker Cable chip reading. DASH Cable data reading. Record of startup time. Onboard temperature measurement. PD monitor. Analog DASH cable
- 【Note】To support environmental protection and reduce paper use, the FNB58 does not include a printed manual. You can access the manual, firmware updates, and app information via the QR code provided in the packaging

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | FNIRSI |
| Power Source | Corded Electric |
| Style | Digital |
| Colour | multi-color |
| Item Weight | 45 g |
| Item dimensions L x W x H | 8.2 x 4.2 x 1.2 Centimeters |
| Min. Operating Voltage | 4 Volts |
| Specification Met | CE |
| Measurement Type | Multimeter |
| Maximum Operating Voltage | 28 Volts |
| Manufacturer | FNIRSI |
| Model number | FNIRSI-FNB58-bp |
| Item Weight | 45.4 g |
| Product Dimensions | 8.2 x 4.19 x 1.19 cm; 45.36 g |
| Item model number | FNIRSI-FNB58-bp |
| Item Height | 0.47 Inches |
| Item Width | 1.65 Inches |
| Are batteries included? | No |

## Product Details

- **Brand:** FNIRSI
- **Power Source:** Corded Electric
- **Style:** Digital
- **Colour:** multi-color
- **Item Weight:** 45 g

## Images

![USB Tester 4-28V 7A LCD USB A&C Voltage Current Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Image 1](https://m.media-amazon.com/images/I/61r3ahYa0jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top in the market
*by B***P on 29 June 2025*

Excellent product

### ⭐⭐⭐⭐⭐ Review
*by W***N on 17 February 2024*

Produto de excelente qualidade, ótimo acabamento e muito preciso

### ⭐⭐⭐⭐⭐ Review
*by E***E on 3 December 2025*

Excelente , cumple con lo publicado,

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-03-11*