For the sake of any future Googlers: If you use Firewire Target Disk Mode to transfer everything from your iBook to your iMac, you may inadvertently transfer over the setting that displays your battery status. As an iMac has no battery, you will thus be unable to make the stupid indicator disappear. After much googling to no avail, Snookums helped me search through my preferences and find the relevant line in the “com.apple.systemuiserver.plist” file. Just delete that, logout, and when you login again the indicator will be gone!
Important Note
This site features content going all the way back to 2000. The posts you’ll read reflect my views and writing style at the time. While I have gone back to clean up a few of them, I think it’s important not to sanitise too much. This site is a record of who I am and how I’ve grown. Any blog post written years ago may not reflect who I am today, nor how I would write about the same topic today.