I wonder if I could cook up a prog that checks the hw.acpi.battery. life and time sysctrl variables and reports to me when the hit such and such threshold. I'd hope theres some thing in the system that could though. I rarly use my system (laptop) on a battery. But when I do, a lot of times I won't log into X11 -- I just tend to use X11 for Amarok, Konversation, and Konsole. I've yet to find a good CLI WWW Browser though, Lynx I'm most comfortable with but I do perfer links for the better page rendering.