Battery suddenly stopped charging

I've got an early 2011 MPB (2,8). It went from having a battery that charged up just fine to one that will now only read 0%. I've dug through a lot of forums and done the SMC reset and PRAM reset to no avail. I'm wondering if anyone else has had this problem(?) I'm also wondering if there's anyway to do a reset on the firmware - from what I could glean online some MBPs have the option to restore firmware with a Restore CD, but it doesn't seem there's a version for my model.
thanks in advance.
eddy

Can you post this from System Profiler>Hardware>Power>Battery Information:
Ciao.

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      Device Name:          bq20z951
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      PCB Lot Code:          0
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