Originally Posted by phughes

I take a battery pack. It is relatively small, about the size of a portable hard drive, and use it to charge the phone. The one I have can charge my phone four times. I charge it at camp grounds. I also plug in the phone or battery pack in restaurants if I stop to eat. I also generally keep my phone off, or in airplane mode while riding, unless using to check email, or a map. I use Wikicamp to find campgrounds, and also as a map. The maps are downloaded to the phone, and can be used with GPS alone with the phone in airplane mode.

Generally speaking, there is no real need to have most electronics on while riding. I have found this works well for me. No need to overthink. Most campgrounds have sites with electricity. I have also used electrical outlets in pavilions in campgrounds. One campground actually offered me a campsite next to a pavilion so I could use the outlets. I am not too worried about leaving a battery pack alone on charge, so it works well. I would not leave a phone unattended though.