Is this problem also the same issue for Anbernic devices like RG353V?
I always see comments saying never use USB-C to USB-C cables, but wasn't sure if it was for this reason, or because most USB-C chargers put out higher voltage and the device will melt (which actually happened to my first RG353V after I inadvertently plugged it into a QC3.0 charging socket overnight, thoroughly melted)
Is this problem also the same issue for Anbernic devices like RG353V?
Likely yes, although I don't have any anbernic devices to confirm it on right now.
I always see comments saying never use USB-C to USB-C cables, but wasn't sure if it was for this reason, or because most USB-C chargers put out higher voltage and the device will melt (which actually happened to my first RG353V after I inadvertently plugged it into a QC3.0 charging socket overnight, thoroughly melted)
The USB-C and the USB-C Power Delivery protocol are pretty safe. USB-C starts out with chargers putting no power on the main power lines, and only a tiny amount of power on the CC pins. Once the CC pins detect specific levels of resistance coming from the other side, it will put out 5V at up to 3A (15W) on the power pins. (This is the hack I did in the article, which costs next to nothing for device manufacturers to impliment.)
USB Power Delivery requires a digital negotiation with the device on the CC pins before going above 5V, and it has to negotiate with both the device and the cable to go above 3A. (e-marked cables have a small chip in them. Chargers aren't supposed to go above 60W (20V*3A) without the cable and the device both confirming compatibility.)
USB-A ports, on the other hand, always put out power on the power pins. Normally it's 5v, but I think QC can go higher. However, QC (all versions) is a proprietary technology, so I don't really know the specifics of it. I wouldn't expect it to do higher voltage without some negotiation, but who knows. Anbernic probably isn't following the spec either way.
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