>>772539> Is it possible to use google maps on my smartphone and occasionally turn on the gps to save on battery lifeI don't see why not, but it's probably a better idea to use offline maps with an app like OSMAnd in case you can't get a good signal.
> Has anyone used dynamos?Yes. Modern hub dynamos are great, you can hardly feel the drag. Your best bet would probably be a hub dynamo front wheel +USB charger adapter. I don't have the USB charger for mine but there are lots of options.
http://www.cyclingabout.com/list-of-hub-dynamo-power-supplies-for-usb-devices/I wouldn't want to use a cheapo bottle dynamo for touring if I was using it all day to charge batteries. They're OK if you get delayed and have to ride the last little bit in the dark.
>>772294Hi Mule
