Uploaded December 2022 | Updated September 2026, 1 week ago

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Testing and exploring a USB fast charge tester FNB58 made by Fnirsi. Let's see what it can do and what's inside.

Get the FNB58 USB tester:
fnirsi.com/products/fnb58?sca_ref=9216013.ntkg5GeG0R&utm_source=af&utm_medium=ref&utm_campaign=9216013

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