If you have an REI close by, buy your lighting gear there. That or another store with a similar return policy makes a faulty light as simple as going in, saying "this stopped working" and walking out with a replacement or at least another lighting system. I had my first system, a Niterider Sol, die on me after a week in Seattle's rain, and my first Dinotte 200L had a funky connector. Both times getting a replacement took 10 minutes.