claudiafrombrighton

Q: After downloading El Capitan my battery discharges in about an hour.

I have a mac book pro, 13 inch, early 2011.  Processor 2.7 GHz Intel core i7.  4 GB 1333 MHz DDR3. 

I downloaded El Capitan, version 10.11.2.  Since downloading El Capitan, my battery power quickly discharges.  I may get a little over an hour out of a charge now.  I also notice a hissing sound coming from the speakers at times.  How do I fix this?

MacBook Pro, OS X El Capitan (10.11.2)

Posted on Jan 10, 2016 4:55 AM

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Q: After downloading El Capitan my battery discharges in about an hour.

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