# Fnirsi FNB48P BT USB Port Tester with Bluetooth

**URL:** https://aio.lv/en/product--fnirsi-fnb48-bt--12429093
**Data updated:** 2026-05-10 06:31 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** Fnirsi
**Manufacturer code:** FNB48 BT
**EAN:** 5905156102217
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 35.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fnirsi-fnb48-bt--12429093

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Fnirsi FNB48P BT is a professional USB port tester equipped with Bluetooth connectivity for real-time monitoring of voltage, current, and power. Designed for diagnostic testing of chargers, cables, and various USB devices, it provides accurate data analysis and protocol detection. Its compact interface allows users to track charging performance and identify potential power issues efficiently, making it an essential tool for electronics technicians and enthusiasts.

## Long description

The FNIRSI FNB48P BT is an advanced USB port tester featuring a Bluetooth module, engineered for precise analysis of charging processes. It supports multiple interfaces and a wide array of fast charging protocols, operating with high current to allow for accurate monitoring of voltage, current, and power. The device offers intelligent cable diagnostics, comprehensive data recording, clear graphical visualization, and automatic screen orientation. Housed in a durable CNC-milled metal casing and powered by a high-performance ARM processor, it serves as a reliable tool for both professional service technicians and electronics enthusiasts.
Advantages
This tester provides exceptional versatility by supporting USB-A, USB-C, and Micro USB interfaces, making it compatible with a vast range of modern and legacy devices. It features laboratory-grade precision with a high-resolution readout, allowing users to track even the smallest fluctuations in power parameters in real time. The integration of Bluetooth connectivity enables seamless data analysis and archiving via a dedicated application, while the robust metal housing ensures long-term durability and protection of internal components. Furthermore, the device simplifies complex diagnostics through automatic protocol detection, intelligent cable resistance measurement, and intuitive graphical data representation.
Suitable for
Testing and verifying fast charging protocols for smartphones and tablets
Measuring the internal resistance and quality of USB cables
Diagnosing power issues in chargers and power banks
Monitoring real-time power consumption of USB-powered electronics
Analyzing battery capacity and charging efficiency
When it may not be suitable
This device is designed for diagnostic and analytical purposes and may not be necessary for casual users who only require basic charging functionality without the need for detailed technical data. It is also not intended for high-voltage industrial power systems exceeding its specified operating range.
Key specifications
Voltage range: 4–24 V
Current range: 0–6.5 A
Power range: 0–156 W
Display: 1.77-inch HD screen
Supported protocols: Apple 2.4A, QC2.0, QC3.0, USB PD, Samsung AFC, Huawei FCP/SCP, OPPO VOOC, DASH, WARP, SuperVOOC, PE+
Processor: High-performance ARM
Connectivity: Bluetooth and PC interface
How to use
To begin, connect the FNIRSI FNB48P BT between your power source and the device under test using the appropriate USB interface. Once powered, the screen will display real-time voltage, current, and power data. Use the function buttons to navigate through the menu to select specific protocols, view graphs, or initiate cable resistance tests. For advanced data logging and remote monitoring, pair the device with the compatible mobile application via Bluetooth. The gravity sensor will automatically adjust the screen orientation for optimal readability during your measurements.
What to consider before purchase
Ensure your devices utilize compatible USB-A, USB-C, or Micro USB ports
Verify that the voltage and current requirements of your equipment fall within the tester's specified ranges
Consider if you require the Bluetooth functionality for remote data logging or if standard on-device monitoring is sufficient
Usage recommendations: Always ensure the device is securely connected to avoid intermittent contact during high-current testing. When measuring cable resistance, follow the on-screen prompts to perform the two-step constant current load test for the most accurate results. Keep the firmware updated via the PC interface to ensure compatibility with the latest charging protocols.

## FAQ

### How much does the Fnirsi FNB48P BT USB Port Tester cost, and is it available for purchase?

The price is 42.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 155 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 07.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Fnirsi products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Fnirsi service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12429093/68729275_large.webp