Thanks I am using LK8000 on a Mio Moov M400 PNA. I also carry a map, and a backup battery. For a battery, I carry this, which I purchased at home depot:

http://www.blessthisstuff.com/stuff/...t-by-mycharge/

I keep it in my shorts pocket, and run a USB cord to my PNA. It will run my PNA for a very very long time.

Eventually I'd like to have a connector installed so I can run my PNA from my 12V system, but for now the battery works well enough.