It's not the cable that's the problem here; it's the device you're plugging into the cable. You don't need a cable tester to detect this problem; just plug the

It's not the cable that's the problem here; it's the device you're plugging into the cable. You don't need a cable tester to detect this problem; just plug the device into a spec-compliant USB-C power brick with a USB-C cable and see if it fails to charge.