I've only got the one spare. It's a working one that I kept for parts in case my other one needed them. I was a bit sentimental about it because it got me through when I was ill and finances were horribly bad 6 or 7 years ago. The idea was in the back of my head to make sure of it in case I should ever need it again. Of course realistically I have a number of newer G3, G4 and intel portables that I'd sooner use