Monday July 18, 2005 Casper Dik posted recently about frkit and mentioned that there was a GNOME applet for the battery status driver. I was the one that did the port of the existing GNOME battery status to the acpidrv driver that is in the frkit bundle.
You can download the frkit bundle for the gnome applet here. This contains the source and binaries, the source is hacked in and doesn't support GNU autoconf because I haven't spent the time to understand how it is supposed to work.
I've also posted the patches and request for official Solaris x86 support to the GNOME bugzilla bug# 302886. Longer term the correct way to do this is to get HAL ported over to Solaris since this benefits GNOME & KDE. I believe the Desktop community of OpenSolaris will be starting that port. Once we have that done and the real interface to the battery status is implemented we can have a much cleaner solution. In the mean time my hacked up applet will do.