LOL, yes, so "advanced" because of the EISA slots it needed a bunch of disks to configure it.The system has a highly advanced BIOS that is configured using a set of 4 floppies.
Then there's all the non-standard oddities and quirks Compaq included in their BIOS and hardware at that time. I remember some DOS software that worked fine on a generic PC would choke on a Compaq.
If I recall, you had to waste 8 to 10 megabytes of space on your hard drive for the special "config" partition.
If you couldn't find the exact disks for the exact model, including the extra EISA files for whatever third-party cards you were using, you were S.O.L.
And then compound that with, as you mentioned, dead batteries.
IBM had the same deal with their MCA card slots on their PS/2 series.
Thank goodness the industry invented PCI slots.
The one thing Compaq did right was the cases. Best build quality of any corporate PC save the IBM PS/2 server series.

