I wonder if my cable is just unlucky because there are so many good reviews. I use it for my 2016 MacBook Pro with original Apple charger. I notice that when I charge my laptop and work on my laptop while it's charging it randomly takes me to the login screen and then I log back in and the laptop comes back like I just put your screen to sleep. It's very annoying when I'm busy with something and he falls asleep 5 times in a row. I end up having to pause charging when I'm using the laptop and only charge it when I really need to put the laptop to sleep. I noticed the last time after it froze it charged my laptop to about 60% when I unplugged it and then it drained much faster. I'm not sure, maybe it made my laptop work harder so the battery died quickly or something. Can't say I noticed that it charges very quickly, but then again I was more concerned that it wouldn't fit my laptop. When I first plugged it into the charger it wouldn't turn on, I took it off, tried turning the charger around and making sure it was secure. It worked in the end, and on other occasions when I changed my laptop I had to pull the charger out of my laptop and try a few times until it indicated it was charging. Sometimes it shows that it is connected to the power supply but does not charge immediately, and then it starts to charge. I think I need to get mine back maybe mine is just cool again but that was my experience.