I have an iBook 600 MHz G3 with DVD and 12" Screen. No matter what OS I use, if 9 or X, the battery indicater reads "No Batteries 'Available" and marks the battery symbol with a black X. The battery itself is fully charged, as it indicates when the pressing the button on it. Occasionaly the iBook will start charging (as seen on AC cable, an orange glow), but still doesn't recognize it in the operating system. Sometimes the iBook will work without the power cable plugged in, and sometimes it won't. What can the problem be, and how can I fix this??? Battery Updater did nothing for me from Apple, still the same old message! Please help!!!