sleep wake – Macbook Air – battery drains while sleeping (but not when shut down) – via: Ask Different
Posted by jpluimers on 2017/08/07
I had the same issue as in sleep wake – Macbook Air – battery drains while sleeping (but not when shut down) – Ask Different which suddenly introduced itself in April 2016 after I had been running El Capitan (OS X 10.11) for a while.
The Mac didn’t have PowerNap active as I verified using How Power Nap works on your Mac – Apple Support
At first it looked like an SMC reset worked as explained by Reset the System Management Controller (SMC) on your Mac – Apple Support and mentioned in Mac Air loses 90% of battery overnight when in … | Apple Support Communities.
The Mac is indeed running Chrome, but I don’t like to turn that off before sleeping.
Executing pmset -g would show hibernatemode 3.
So I opted for the hibernate option as mentioned in the first link:
sudo pmset -a hibernatemode 25
This will take a bit longer to restore the memory from hibernate state, but saves a lot of frustration.
–jeroen
The Wiert Corner - irregular stream of stuff 
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