Uploaded July 2018 | Updated September 2026, 2 weeks ago

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Want to know if your USB charger, power bank, cable, or USB port is delivering the right power?
In this video, I’ll show you how to use a USB tester and load resistor to test:
– USB charging voltage and current
– USB port performance on computers, laptops, and power adapters
– True capacity of power banks and chargers
Also includes tips on spotting fake cables, overrated power banks, and voltage drops using popular testers like FNIRSI, AVHzY, and TC66.

Affiliate links:
USB testers:
Fnirsi FNB58:
amzn.to/4mTp8pN
https://alii.pub/7bnird
AVHzY testers: amzn.to/4o8v6nG
USB-C tester: amzn.to/4o9E6ZL

USB testers from AliExpress:
FNB58: https://alii.pub/7bnf1l
4.5-50V 0-12A USB-C tester: https://alii.pub/70ytlm
Power-Z KM003C USB-C tester: https://alii.pub/7bnf5o

Support my project:
via Amazon: amzn.to/3Kw6OFt
via PATREON: patreon.com/2013ElectronicsComputers

Monetize your Clicks and Downloads: publisher.linkvertise.com/ac/18339
youtu.be/MLxm3Sm8ZFg

#USBTester #TestUSBCharger #PowerBankTest #USBLoadTest #TestUSBPorts #TestUSBCables #MeasureUSBVoltage #USBChargingDiagnostics #USBTestMeter #USBPowerBankReview