i have made a bunch of scripts to visualize misc retu-adc data, you're welcome to try: http://mrrau.dyndns.org:23280/n800/kcbatt/

kcbatt is my attempt at cmd-line battery reporter
gather_data/ contains scripts to log/plot

ps1. battery reporting algo is v0.1, so any feedback will be nice
ps2. it needs access to /dev/retu so you will need to run it as root or give default user access to that device
ps3. contact me on irc: #maemo on freenode
ps4. should work on 770 and 810 too