Hello

I'm using my Samsung Galaxy Nexus (currently running Android 4.2.1) more and more as GPS/NavSat when going for a ride since its screen is much bigger than the Garmin eTrex 20.

Before selling the Garmin, I have a couple of questions:

1. Can an external battery be hooked to the Nexus USB port and provide power for a full day with GPS on and frequent screen use? Currently, I keep turning GPS + screen off as much as possible since the battery can't last for a day's ride, and changing batteries is a PITA.

What about the New Trent 12000mAh recently reviewed by the London Cyclist recently?

2. Is there a good utility that can record a trace, so that I can later see where I went, and see/share the results on Google Maps?

Thank you.