The link to the motherboard is here: http://www.uktsupport.co.uk/pb/mb/450.htm. The battery I'm thinking on looking for would have a connector like in this picture: https://www.adafruit.com/products/783.
I have a Pb450 motherboard, which fits a variety of 486 processors, and I saw on a website that had a diagram of the board that I could use an external battery pack. Unfortunately tracking down this part has proven impossible. Would it damage the system if I use a cr2032 battery in a holder that has …