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Description
USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0Updated USB TesterFNIRSI 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 TesterFNB58 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
- 【Updated 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】In order to respond to the environmental protection policy and reduce the use of paper, FNB58 does not come with paper manuals. You can visit the website of FNIRSI on the box to download the manuals, including product update firmware, APP, etc
Product Description
FNIRSI FNB58 is a high-reliability, high-safety versatile USB tester and fast charging trigger.
- FNB58 USB tester has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface.
- FNB58 uses external 16-bit ADC, PD protocol physical chip, it can be used to test the fast charging protocol of chargers.
- FNB58 can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and U disks.
- FNB58 can be used to measure the charging power of mobile phones and the input and output of mobile power supplies.
Four Functional Curve Display
Real-time voltage and current curveView the change of the charging curve in real time, find the abnormal charging immediately. | Offline curve recordingSupports up to 9 hours of offline voltage and current curve recording, charging process fully displayed. | D+/D- voltage curveCharging protocols Changes. Master in real time. | High-speed power ripple measurementCharger ripple measurement, easy to screen inferior chargers. |
Cable Detection Just Use FNB58
PD E-Marker Cable DetectionRead data information of CC line with E-Marker chip | DASH Cable DetectionRead DASH cable chip related data | Cable Interal Resistance MeasurementConstant current load two-step fast measurement of wire resistance |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Protect if you use a lot
I rarely get insurance on flights or trips but when I bought my steam generator, I just thought why not, I use this thing almost every other day. And it broke after 16 months of use, and they reviewed my claim within 15 minutes and sent the gift card so I got a brand new replacement generator for a $10 Asurion warranty I bought at that time a couple years ago. Best move ever made.
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Reviewed in the United States on November 27, 2025
★★★★★ 1
No help from Amazon
Do not buy anything from this seller product was defective and they will not stand behind their warranty This two year insurance was purchased for a power washer that was recalled for safety issues I followed instructions on recall notice which was cut power cord and send email to seller including photo of cut power cord I’m requesting a refund for both items or replacement item Amazon system is no help only says items cannot to returned
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Asurion insurance.
Excellent service. Prompt response. The best!
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Assuring Insurance WORTH IT!
No hassels, easy to use if needed. Saved me a lot of money in the long run! Will purchase again!
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Reviewed in the United States on February 14, 2026
★★★★★ 5
They stand behind their warranty. Price is very reasonable.
Problem with unit. Asurion refunded purchase price same day. Great service!!!!
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Reviewed in the United States on June 1, 2026
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