Warren Post wrote in
.com:

On Tue, 03 Feb 2009 14:40:53 +0000, Jim Yanik wrote:

It just will not have a long run time.

Ah, that's been my problem, then. I have never tested for longer than
it takes my system to shut down, which is only 60 seconds or so. Now
that I'm getting a new battery tomorrow, I'll measure the run time I
get, and again periodically.

Is there some rough guide as to when to replace the battery, such as
(for example) once run time has dropped to half?

half seems reasonable.
you know you're on the downside of the battery's life at that point!

--
Jim Yanik
jyanik
at
kua.net