Originally Posted by
dr_lha
I don't think you're going to find a GPS that runs on AA batteries, however, alternatives ways to charge your GPS might include a dynamo hub, or maybe even a solar panel, like the ones featured on this page:
Bicycle Touring - Shop Gear
Garmin do a few gps's that run on AA's.
The first that springs to mind as most tempting is the Etrex 35t, which is a new model.
I think all the Etrex models take AA's and wouldn't be surprised if its the Edge models with their rechargeable that are the odd ones out.