I haven't used them to see if they charge well or not but I did my research before buying and they have everything I'm looking for when it comes to quality. The real nylon fibers that make them up are too stiff in my opinion. I sent them back before I could try them. When I took them out of the box they literally stayed in the same shape and for a very long time. I have yet to find any cables that I have not returned for this reason, with the exception of one product that sells a new right angle cable gland. This makes matters worse if you use your phone while it's charging, like I did. It's from PURSUN (if you're interested).