I have a ~25 year old Lombard battery (original to the machine we have!) that, by some miracle, still holds a 50% charge and lasts a solid 1.5-2 hours!
I attribute this, in part, to the fact that for many years, said Lombard got a confused battery board not long after we got it and refused to recognize batteries, until about 12 years ago, as I was rebuilding it with new plastics (the original plastics started cracking pretty badly back in 2003 or so), I chanced upon a hard drive with Mac OS X Tiger on it (I forget why I had it, but it must've been for some other project), and it booted. Not only that, but in so doing, it somehow reawakened the battery! It's been working ever since!!
I have another (an aftermarket somethingorother) that also worked, but it's been quite awhile since I last checked it, and it's probably dead and unrecoverable by now.
At some point, perhaps I'll get it (or maybe one of the two others I think I have which were completely dead years ago) rebuilt, so what goes on here will help me to decide whether or not to send them to Chan's service.
c