Here's a nice view of my setup with e17. Quite useful although it's a posed photograph as I normally use plain text mode. The xterm window shows the battery status read from UPower daemon. The shown percentages seem correct to me. In the background runs XEmacs which has a nice and simple builtin irc client btw.

As xorg runs so fine (thanks to the configuration provided in the n900-configs package) and ssh, too (turn off power saving (iwconfig wlan0 power off) when experiencing “laggy” connections), charging and bluetooth will be my next items.