SparcBook Tadpole

Hi My problem is that I don't know if I can restore the information in it. The early Sparcbooks didn't have openboot. I'm a little worried about such bringup. There is a fellow on ebay that has these and claims that the batteries are unused( about $20 plus tax and shipping ). I have some empty space in the machine. I'd rather use that for a battery bracket with a standard button cell. If I had two brackets with small resistors, I could even change batteries on the fly. If the case can be poped off, that would be great. If not, I may revert to the dremel. I can put it in an external socket and power it from a supply to keep it alive while operating. I've written down the hostname and ethernet address so it is minimum risk. The web page says if the clock doesn't work, replace the chip. I'm not sure if that is whats wrong. I've not tried to reset the clock yet to see if it continues to run. I do know that the clock uses more power than the RAM and may just be the straw that breaks the NVRAMs back. Using an old battery device from digikey is just prolonging the eventual death. If it isn't a current manufacture it is already part dead when you get it. Dwight