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Apple has released three SMC updates for all of its laptops to address potential battery issues. Owners of 2012 and 2013 MacBook Airs, 2012 MacBook Pros, and MacBook Pros with Retina display should update…

All the updates are related to the same issue, the battery. They can be downloaded from the Mac App Store or directly from the Apple website:

This update addresses a rare issue that could cause the battery to quit unexpectedly or leave the system running when the battery has reached less than one percent charge.

Source: iMore.com
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