We all have smartphones these days, so naturally we need some way to charge them while riding. I tried one of these on my KLR650 during a ride to Alaska this past summer and was blown away by how nicely it worked, and how cheap it was. I rode for 10 days in the rain and never had any water issues. Installation is super easy, too. It gives you 2 USB ports, and a cigarette lighter port, so you can plug in your air compressor or heated vest.

Check out this USB charger here