If your battery indicator on your *book has gone wonky, there's an apple update that actually updates the firmware in the power management circuitry. Several os 10.2 updates made *book batteries go nutso, but I've installed them all and I assure you that once you get to 10.2.8 (plus security updates and the battery update) the battery should be back to normal. I've had similar problems (flaky power meter, drastically reduced battery life) on both my 15in Powerbook (1.25 SuperDrive) and my beloved 12in iBook (G3 700) and installing the updates fixed both of them.
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If your battery indicator on your *book has gone wonky, there's an apple update that actually updates the firmware in the power management circuitry. Several os 10.2 updates made *book batteries go nutso, but I've installed them all and I assure you that once you get to 10.2.8 (plus security updates and the battery update) the battery should be back to normal. I've had similar problems (flaky power meter, drastically reduced battery life) on both my 15in Powerbook (1.25 SuperDrive) and my beloved 12in iBook (G3 700) and installing the updates fixed both of them.