Are you using the original charger? iBook chargers may work, but they use a lower voltage, and may not charge.
I'm guessing that this is either a bad logic board or a bad charger. The battery is new, and this doesn't seem like an OS issue. If the charger is good (test?), then there's some sort of disconnect between the charger and the battery. The charger plugs into the logic board, so that would be the most likely thing to fail, unless there's a disconnect from the logic board to the battery. Replacing the logic board on a TiBook isn't too hard if you are comfortable doing that, so if that is the issue, you can find a board on
eBay or iFixit ($299), and replace it yourself.
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Power to Burn.
At speeds of up to 733MHz,
The most powerful Mac in history
burns CDs, burns DVDs, and
burns Pentiums
- apple website, oct 4, 1999. advertisement for the powermac g4