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Can you advise me of where or if it a high capacity battery exists to replace my pre unibody battery on a MacBook Pro?

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not an answer but more of an advisory: Supposedly the NuPower batteries they sell at [OWC][1] are higher capacity, but I found with my PowerBook G4 that they weren't all they claim to be. The battery was down to 90% capacity within about a week... [1]: – Robert S Ciaccio Sep 29 '10 at 22:59

A quick search turned up Fastmac replacement batteries which claim to

...replace the computer’s original battery with a larger capacity and longer lasting advanced power cell battery that utilizes TruePower technology. With up to 68% more capacity...

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Thanks, I know about it but I suppose to get answers based on personal experience. – glebreutov Sep 30 '10 at 8:46

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