[Q] The Aero provides low-level support for querying the battery status, so any
program that advertises "APM compliance" should run on the Aero. It's fairly
simple to fetch it, so it would be strange if nobody has written such a
program.

[A] The PowerMonitor does this job very well on my Aero. You can find it as
pwrm151.zip on CICA or it's mirrors in the desktop-directory, I think.