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Sep 1, 2016 11:17 AM in response to littlegiraffesteph21by John Galt,Please determine that Mac's battery condition: OS X El Capitan: Battery conditions
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Sep 1, 2016 1:34 PM in response to littlegiraffesteph21by John Galt,Good. Please read Apps can affect Mac performance, battery runtime, temperature, and fan activity - Apple Support to determine if any particular app might be responsible.
If that does not reveal anything of interest, please read and follow all these instructions, starting with Before resetting the SMC and including If you're using a Mac notebook computer that is having issues related to power or the battery:
Reset the System Management Controller (SMC) on your Mac - Apple Support
This may also be relevant: If the fans on your Mac notebook computer run after you migrate data - Apple Support.
If none of the above resolves the problem, the problem could be caused by a defective battery despite the fact its condition is reported to be "normal". In that case, contact Apple to arrange for an evaluation of the battery, and replacement, if necessary. Start here: Servicing the battery in your Mac notebook.