Macbook Pro 13" - battery depletion - tcpkeepalive

[jeremy]

Hi,

MacBook Pro (Retina, 13-inch, Early 2015)

My battery life has really taken a turn for the worse
recently - even draining while the lid is closed. I found
an article here

https://discussions.apple.com/thread/8368663

And followed the steps - which appeared at least to
resolve the battery drain whilst lid closed (I still find
the battery life to be now much worse than it used to be,
max 3 hours is possible despite the health reported to be
good - things are probably made more complicated as
running Parallels 14 and Windows 10).

But back to that article - what I noticed is that the
value of tcpkeepalive seems to be changing randomly - no
time stamps on the following output but


MacBook-Pro:~ $ pmset -g | grep tcp
tcpkeepalive 0
MacBook-Pro:~ $ pmset -g | grep tcp
tcpkeepalive 1
MacBook-Pro:~ $

Now the switch from 0 to 1 was not caused by me issuing a
pmset command.

Any suggestions what might be resetting this value and how
to prevent it from doing so?

--
jeremy

[Chris]

Thanks for this post. I've noticed my 2017 MBP exhibited the same issue;
regularly losing 20% battery overnight. For example, this morning
(Sunday) it was on 58% battery - it was 100% went I left work on Friday
evening. Hopefully, this has resolved it for me. I'm on 10.13.6 FTR.

I'll let you know if my tcpkeepalive changes underneath me. One thought:
is your Mac managed by work? Do they need Find My Mac to be working for
remote access, etc? Mine is a work managed one, so I am half expecting
it to change.

[jeremy]

In article <pqhlgt$gs1$1...@dont-email.me>, ithi...@gmail.com says...

Not managed by work, I'm the only mac user in the business (everyone
else, when given the option, went for laptops for windows only). And I
originally went "the mac way" because the Macbook Air was so lovely.

--
jeremy

[Chris]

Checked the battery usage this weekend and it's 2% usage since Friday
rather than the 40% last weekend.