We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
FNIRSI FNB58 USB tester with 2.0 inch color TFT LCD and USB-A, Micro-USB, Type-C ports

FNIRSI FNB58 Upgraded USB Tester with Bluetooth

SKU CH-44WX-41P4A

Measures USB voltage, current, power and capacity across A, Micro-USB and Type-C ports with fast-charge protocol detection, curve recording and Bluetooth logging for Android

  • Team affiliation1 Piece
  • Key featuresUSB TESTER, Battery Powered, true
  • Product typeVoltmeter and Ammeter
  • 0-inch color TFT LCD for clear readings
  • Integrated USB-A, Micro-USB and Type-C ports test multiple devices
  • Detects QC2.0, QC3.0, PD2.0, PD3.0 and VOOC fast-charge protocols
  • Records 10 charge-discharge sets plus 9-hour voltage-current curves
  • Bluetooth sync to Android app with over-voltage and over-current alarms

FNIRSI FNB58 Upgraded USB Tester

The FNIRSI FNB58 is a compact USB power multimeter with a 2.0-inch color TFT LCD. It integrates USB-A, Micro-USB and Type-C interfaces to measure voltage, current, power and capacity from 4 to 28V at up to 7A. Bluetooth connects the meter to an Android app for data logging and over-voltage or over-current alarms. iOS devices are not supported.

Who this suits and who should look elsewhere

Engineers, technicians and hobbyists who need to verify charger output, cable loss or device draw will benefit from the protocol trigger detection and curve recording. Buyers who require Apple device connectivity or automated PC software without a phone should look elsewhere. The tester is battery powered and intended for bench or field diagnostics.

Deciding specification — 16-bit ADC

The upgraded model uses an external 16-bit ADC and a dedicated PD protocol physical chip. This hardware combination determines measurement resolution and the ability to trigger and decode Power Delivery 2.0 and 3.0 negotiations accurately. If your work demands that level of protocol fidelity, this is the defining specification.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $69.99
Pricier than about 87% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameWESTOBiG, FNIRSI
Product typeVoltmeter and Ammeter
More details
Team affiliation1 Piece

Questions about this item

What connectors does the FNB58 provide so I can plug in my charger and device?

The FNB58 has integrated USB-A, Micro-USB and Type-C ports, letting you insert the tester between any USB-A or USB-C charger and the device you want to measure.

Will the FNB58 safely measure my older 5 V 2 A charger without damage?

Yes, the tester accepts 4 V to 28 V input and up to 7 A, so a legacy 5 V 2 A adapter is well within its operating range.

How can I confirm the FNB58 is capturing fast-charge negotiations correctly after I connect it?

The 2.0-inch color TFT LCD shows real-time voltage, current, power and the active protocol such as QC2.0, QC3.0, PD2.0 or PD3.0, and the Android app adds over-voltage or over-current alarms.

More in Multimeters & Electrical Testers

Similar items