There are motorcycle accessories that look cool in a catalog, and then there are the ones that earn permanent residency on your bike. You know, stuff like a very good phone mount, a handy set of aftermarket mirrors, or even a pair of grips that gives you just the right amount of feel.
You could argue that a USB charger fits the bill perfectly, too. It’s not glamorous, it won’t make your motorcycle any faster, and nobody’s stopping you at the gas station to ask where you bought it. But once you’ve ridden with one for a while, taking it off suddenly sounds like a terrible idea. And yeah, this is particularly useful if you’re like me and you ride a lot of old or barebones motorcycles.