I'm curious about which battery chargers/power adapters are interchangeable. I'm starting to have so many lying around that I'm not sure I can really identify which belongs to what computer. My husband has a G3 iBook with one of the white cube chargers; my G4 iBook has one that looks exactly the same. But I also have a G4 PowerBook (one of the original 400 mhz ones) that came with the UFO-shaped charger. It appears that all three laptops charge correctly with all three chargers, but is there some hidden difference that would create a problem for any of the laptops (like shutting themselves down when awakening from sleep, she asks guiltily) ? I like using the UFO type at school because its lack of a light is a little more subtle than the bright orange or green battery charger that announces the presence of a laptop in a dark classroom. I do have a security lock for my laptop, but I also like to conceal it somewhat as well. ----------------------- Gina Wallace Topsham, Maine -----------------------