Originally Posted by JayhawkGSA
I pulled the trigger on this today.
I ordered this 12v to 5v unit off of amazon and will hard wire a USB connection to the bike. The wall wort hat comes with the Nexus 7 is 3 amps so I am hoping this is enough to keep the unit charged.
I also decided to go with the Backcountry Navigator App as it has the option for Accuterra maps which are more detailed than the Gaia maps.
Good luck as it will not be easy trying to solder the output wires from your transformer to a USB cable.