I keep my iPhone, boom box, lights charged with my hub while navigating with the iPhone GPS all day. iPhones in particular can be challenging because Apple demands more than the standard 5 volts from a USB. But this hub powers it fine. I typically use the hub output to charge my battery pack. That way I can charge the phone at night and it's less cumbersome to deal with coords and adapters. And if I were to let the phone battery die, I don't need to go ride just so I can use the phone. Also because it is annoying to have the phone keep beeping that it's getting a charge after a momentary stop.

The front light, rear light, hub, and power converter (to get DC output for charging stuff) is:

> 1 "LIGHT B&M IQ CYO R SENSO PLUS BLACK "
> 1 "LIGHT B&M TOPLIGHT LINE BRAKE PLUS"
> 1 "HUB SHIMANO ALFINE DYNO 36H BLACK DISC"
> 1 "POWER CONVERTER PEDALPOWER+ W/ iCABLE AND V4i BATTERY"

The PedalPower comes with bunches of coords, adapters, sex change for charging almost anything. I also carry a AAA/AA charger that runs off a USB so I can charge those batteries from the battery pack too.

This keeps me fully independent of the power grid. I'm never searching for an outlet to plug into or staying at a motel so my phone can charge or otherwise inconvenienced.