Are there any programs for X (for KDE would be great, something that sits in the Panel) that display the current charge of a laptop's battery? It would be great to know how long until my laptop dies...I used it with just the battery today for the first time ever...got about 2 hours out of the battery (as opposed to barely a half an hour when I used to run XP) but when it was drained, the system just shut off on me...I had no idea how much life the thing had left in it.