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2009 Macbook only holding 21% charge suddenly?

So I use Coconut Battery, and when I checked on my battery a month and a half or so ago, it had 79% maximum charge; not bad for a 3.25 year old laptop.

But when I checked it again today, it was suddenly at 21% max charge??

What did I do? Can I do anything to reverse this, besides buying a new battery?

MacBook, Mac OS X (10.7.4)

Posted on Apr 25, 2013 7:32 PM

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2009 Macbook only holding 21% charge suddenly?

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