First off, I would like to state that this does charge quickly, in my title, I am referring to the new "fast-charge" technology supported by some phones and some chargers. Some reviewers have stated that this supports fast charging for their device and vice-versa, unfortunately mine is not supported for fast charging while using this charger... BUT, it does not say it is a fast-charger, so I am not removing any stars. It does however charge quickly. Plugged in my LG V20 at 28% and after searching for a good song to play on the way home, it was already at 38%, so I would estimate it would take near an hour to full charge my phone, which is awesome, because that's about how long it takes for my LG fast charger to work anyway, and I think "fast-charge" is just a selling point, as long at the wattage is high, it'll charge quickly. This is a 15-watt charger, so it's quick, and it's USB-C... Micro USB only supports up to 12-watts.
The very main reason for my purchasing this was because I got tired of forgetting my cable at the house when I had 3% charge remaining. I had my battery pack, but without a cable, it's a no-go. So having a hard car charger will (I hope) cure this issue, unless I transfer it to another car, and forget it, which since this did set me back more than a few dollars, I'll make a solid point to not forget my charger. I also paid out the extra for the insignia brand, their brand seems more quality than the rest.