What makes a USB-A (could be USB-C) to USB micro cable a "fast charging" cable?
Just bought a Treedix USB cable tester. I had several USB-A to USB micro cables, but none of them read any differently even tho I have a couple of USB "fast charger" power adapters that I assume came with cables that were capable of a fast charge. My Nanami wireless charging pad for my Samsung S24+ phone clearly says "fast-charging" on it, but my phone does not say that when I AM charging on it with several cables I own.
So I bought some new cables for a few bucks that say they are for "fast charging," and they work! How the hell do I know if my cable is capable of fast charging without a lot of swapping them around to test?
What I bought. 6-foot with a relatively thickish braided cable with a white-colored USB-A port. My other cables were thinner. Note that the speed rating is for USB 2.0, 480 Mbps, with the normal power light on the tester with no high-charging PD lights lit up.
"High Speed Charging and Sync: Micro USB Cable transfer speed up to 480 Mbps, 2.4 Amp charge. Data transfer and high-speed charging 2 in 1."