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header-product USB tester FNIRSI FNAC-28 precise current voltage measurement
19.49 €

USB tester FNIRSI FNAC-28 precise current voltage measurement

USB tester FNIRSI FNAC-28 Photo 1
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USB tester FNIRSI FNAC-28 precise current voltage measurement

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Short description

The FNIRSI FNAC-28 USB tester measures voltage and wattage with support for USB Type-A and Type-C connectors. It features USB 3.2 Gen 2 compatibility and compact dimensions of 73mm x 36mm x 12mm, making it ideal for precise measurements in various applications.
Available for order: 262 pcs.
Warranty: 2 Years
SKU: 11618319
Manufacturer: Fnirsi
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
21.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
24.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.02 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
24.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

The FNIRSI FNAC-28 USB tester measures bidirectional current, voltage and power for devices using USB-A and USB-C interfaces. Equipped with a 16-bit ADC, the tester provides high-precision readings and supports USB 3.2 Gen 2 compatibility. It reports battery capacity, displays curve graphs, recognizes fast-charging protocols such as QC2.0/QC3.0 and VOOC, and can measure cable internal resistance and simulate different charging standards for accurate data analysis.

Advantages

The device delivers precise voltage, current and wattage measurements thanks to a 16-bit ADC and supports both USB-A and USB-C connections. Compact dimensions make it portable for field and bench use. It recognizes multiple fast-charging protocols and provides battery capacity reporting and curve graphs for detailed analysis, while the ability to measure cable internal resistance and to simulate charging standards increases testing flexibility.

Suitable for

  • Testing and verifying USB chargers and power banks
  • Measuring device charging profiles and battery capacity
  • Diagnosing cable quality by measuring internal resistance
  • Laboratory and bench testing of USB power delivery and fast-charge protocols

Key specifications

  • Interfaces: USB-A and USB-C
  • ADC resolution: 16-bit
  • Bidirectional current measurement up to 6.5 A
  • Supports USB 3.2 Gen 2 compatibility
  • Fast-charging protocol support: QC2.0, QC3.0, VOOC
  • Functions: battery capacity reporting, curve graph display, cable internal resistance measurement, charging-standard simulation
  • Dimensions: 73 mm x 36 mm x 12 mm

How to use

Connect the FNIRSI FNAC-28 between the power source and the device under test using the appropriate USB-A or USB-C connector. Read voltage, current and power values on the display; use the curve graph function to observe charging behavior over time. Use the internal-resistance measurement and charging-standard simulation functions when diagnosing cables or testing compatibility with fast-charging protocols.

Usage recommendations

For stable and accurate measurements, ensure secure connector seating and avoid subjecting the tester to mechanical stress or moisture. When testing fast-charging protocols, follow device and charger manufacturer guidelines and do not exceed the tester's maximum current rating.
All features
Weight:
0.021 kg
Height:
12 mm
Width:
73 mm
Depth:
36 mm
Product colour:
Black, Silver
USB version:
3.2 Gen 2 (3.1 Gen 2)
Built-in display:
Yes
Power connectors supported:
USB Type-A, USB Type-C
Testing type:
Voltage, Wattage

Description

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Customer reviews

Customer questions

FAQ

How much does the USB tester FNIRSI FNAC-28 cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 262 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 21.07.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.