3 ms·
the downvotes are probably because it's not usually a polarity issue. the most common issues are with current/voltage negotiations between the charger and devic
by leetcrew 9y ago
the downvotes are probably because it's not usually a polarity issue. the most common issues are with current/voltage negotiations between the charger and device. when this isn't implemented correctly, either the cable or the charger itself (maybe even the device, idk) can erroneously negotiate a power level that is too great for the circuitry to withstand.
you're right that it's not exactly the fault of the USB-C spec, but at the same time, manufacturers would probably not mess it up so much if it were not so complex.
- Dylan16807 9y agoChargers already need to be able to handle phones that pull arbitrary amounts of current, or they will fry on non-C cables too. Other than test-and-see, the negotiation is done with data packets, and a bad cable can't cause anything to go wrong. There is nothing that both fries devices and is the fault of USB-C. The million cables that have the wrong resistor don't make things worse than they already were pre-USB-C.