QUOTE(Upsilon @ Mar 29 2017, 01:49 PM)
But those are cheap A to C cables, no?
USB-A-to-C has built-in physical limitation by the USB-A standards itself to stay at maximum 3A with voltage regulation by the charger side. USB-A is only capable of 3A at maximum, with voltage swing between 5V and 9V, with maximum wattage never exceeding 24W. Anything more than that, the charging standard is proprietary, whether it is Qualcomm's QuickCharge, or Samsung's FastCharge, or those VOOC fast chargers, these have proprietary PCBs in them, and designed only to supply higher charge wattage ONLY when combined with their respective devices (Qualcomm QC2.0/3.0 only gets fast charge at higher wattage when combined with their respective devices, the same with Samsung's version of FastCharge, etc.....else these chargers will drop to the lowest safe level, charging slowly at 5V 2.4A rate). It's USB-C with PD rating that is capable of carrying up to 20V 5A (100W) that you need to worry about, NOT USB-A-to-C. Like I mentioned earlier, I've done my research. USB-C with improper PD rating or Split-PDO (USB-C PD combined with implementation of Quickcharge or any type of of similar fast charging that is not USB-PD) that will fry your cable, brownout your charger and the equipment you're charging.
The "frying" isn't immediate, it's gradual. Cheap USB-C cable cannot regulate current draw from the charger, and you combine that with falsely advertised USB-C charger, will cause a "brownout". A gradual but ultimately fatal burnout of charger itself. Look up Nathan.K and Benson Leung's Google+ posts. Nathan has blown a PC while testing horribly implemented cables and chargers, while Benson lost ports on his Pixel C laptop doing his reports of bad cables/chargers. China-branded companies loves to take shortcuts, but with Amazon reviews that Benson posted, and Nathan's own articles and posts on Google+ (Nathan and Benson works for Google), has forced these manufacturers to stop cutting corners manufacturing potentially fatal chargers and cable. Imagine you sleeping at night, while your USB-C devices charging, with dangerous cables and chargers, you're effectively turning your house into a fire hazard trap. Hence the Google Doc list I quoted earlier.
USB-C and USB-C PD standards were set, but since this is a transitional period, where users still have old USB-A devices and moving to newly purchased USB-C devices, manufacturers of cables and chargers are scrambling to take advantage of this by mass-producing chargers and cables rapidly irregardless of quality control, that flaunts these standards. You simply cannot combine USB-C with PD with any other form of fast charging, the same goes for cables and chargers. Doing so means the manufacturers have violated the USB-C standards of delivering charge to devices and that ultimately means you're risking browning out your USB-C devices, or worse, burning down your house while you sleep at night.
This post has been edited by stringfellow: Mar 29 2017, 02:35 PM