Lasts a few months with very little use as a secondary charger (our official Nintendo charger and docking station are used most of the time). At some point it stopped working when it was cold. Many reviewers of these aftermarket chargers say they can "lock" your switch. It didn't wall me in, but it failed too quickly. I've tried charging other USB Type-C devices with it and it doesn't work. I ended up having to go to a regular store and buy an official charger for not much more than I wasted on it. I don't recommend :(