Originally Posted by brianogilvie

The Edge 800 works well with USB batteries. I have a couple of 1150 mAh Duracell batteries I carry with me in case my Edge starts to tank. The connection isn't waterproof but it should be OK in light rain; the whole setup could go in a baggie if the rain is really bad.

The map issue has nothing to do with the Edge, and everything to do with Garmin's maps. I am a big fan of using OpenStreetMap-based maps for my Garmin products. There's a bit of a learning curve, but it's not too bad. Today's ride was about 30 miles from Versailles west to Thoiry, then back to the train station in Neauphle. I planned it on RideWithGPS.com, using OpenStreetMap cycle mapping, then exported the TCX file to my Garmin. I set up the course to give turn indications, using the OSM France map I had downloaded to the Edge's SD card. It worked perfectly. No Garmin mapping product was involved.