Powerbook Pro 17" when unplugged turns off immediately when on battery

This just started happening yesterday. My powerbook shuts off without warning if the magnetic plug is removed. The battery is showing "charged" right now its at 99%.
If I try to boot up without the power plugged in I get 1/2 of the startup sound and the powerbook winks off, as if the battery is dead. Plugged in is no problem. Def. something up w/the battery.
I have version 1.2 of the battery updater installed. Didn't do anything out of the ordinary yesterday I was working in Word. Part of the day I was working off my battery and everything seemed fine. Only noticed the problem when I bumped the magna cord out by mistake and I went to black immediately.
thougths?
thanks
---K

I would call back and push the issue with someone new.
I spent an extra 30 minutes on hold waiting to speak with a supervisor to try and get the battery expedited (5-7 BUSINESS days!?!?!?) and he told me that they do not upgrade shipping and never have. However he did tell me that I could take my powerbook to the Apple store and if they have one in stock, they could replace my battery in lieu of waiting the ridiculous timeframe.
inconsistencies abound!
1) the rep initially told me I cannot go to an apple store to get my replacement battery.
----the supervisor told me I could
2) the rep told me 5-7 business days
----the supervisor told me Friday at the latest (which makes for 3-5 business days probably)
Really silly that they can't give a consistent answer...my guess if I talked to the "right" supervisor I could have gotten overnight shipping. who knows.
I may still go to the Apple store if I have time.
I will not be installing battery update 1.3 anytime soon.
---K

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