I have only used this a few times since it arrived but on those journeys I have plugged it in I have been impressed by it. On the first ocassion I had my SATNAV and DAB radio plugged into the main outlets and my mobile in one of the USB ports. On the other journey the same with my ipod conneted to the other USB port, both the phone and ipod charged up without any issue. The other thing I liked about it was that when I usually connect to the cigarette lighter socket any small nudge by my leg moved the plug out this was particularly annoying, I did not have this problem with this charger.