I am looking into replacing the PRAM battery in my PowerBook 150, I have not idea how to attach a new batter as it appears to be soldered down. I do not have the Laptop open at the moment but I do have a spare board from a parted out PowerBook 150 that has the battery on it. I will copy the battery's specs:

Varta

2.4V 60mAh

2/V60H Ni-MH

I cannot find anything on replacing this battery.