Q: Battery draining fast - after Mac OS Sierra update

Open Activity Monitor and go to the CPU tab. Make sure the unider View All Processes is check. What is using CPU?

Apps can affect Mac performance, battery runtime, temperature, and fan activity - Apple Support

This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum or other appropriate forum.

Hi, I have exactly the same problem after upgrading to Sierra.

Already did a clean install in the hope of improving things, but unfortunately the behaviour is the same. MacOS Sierra just uses +50% more battery than El Cap.

Most probably I will revert back to 10.11 since I have this issue for more than a week and no fix on sight.

You all can try looking up Activity Monitor > CPU and see which is hogging most %,

if it is ionodecache, Its because you have installed a UBS sharing app, (for me it was USB NETWORK GATE) !

More Info : ionodecache: CPU >100% on Sierra

tk.shinoy wrote:

 

Hi, I am not able to figure out any cause yet, but my battery is dying real fast for the past few days since I upgraded to Mac OS Sierra. I could use my mac almost for 5-6 hours in a single charge but now its hardly staying for 2-2.5 hrs. Anybody experiencing a similar problem?

Same exact problem.  The only "App" that I have opened that is "Using Significant Energy" is Safari.

Nothing in Activity Monitor is using a significant CPU%

Bottom of my MacBook Air is also 'warmer' after I upgraded to Sierra.

I can't figure this out and I have to 'plug in' multiple times/day now where with El Capitan I could go 5 hrs.

(Battery dropped 8% just typing this message )

I'm having the same problem...

How can I fix it?

Kernel Task

http://apple.stackexchange.com/questions/254108/how-to-fix-high-kernel-task-on-s ierra

I have exactly same problem. At least 4 friends of mine noticed similar issue. Unusual Safari CPU usage sucking air's energy. Apple please do something about!!! Waiting for action.

I had an App, mSecure, hogging CPU the other day - then last night, Mail drained the battery within 20 minutes.  Really odd.  Going to try a clean install.  The MacBook Pro Retina is also a lot hotter since Sierra.  --- I'm going to stop updating when these OS's are released.  Wait a few months and then do it.  Last three years has had problems.

I really wish people would read the entire question FIRST!

Many of us are having this same problem since upgrading to Sierra.

CPU activity is the same as before - but the battery is dying quicker than the Ghostbusters remake did!

Several times now my battery has shown (for example) 70%. I close the lid, drive home from my client's place, around 7 miles, open the laptop and it's dead!

And the over-heating issue is just ridiculous. Sometimes I can't even pick up the laptop it's so hot! Never had this problem before!

I'm really hoping to find a way to revert to El Capitan - when my battery could go an easy 6 ~ 8 hours and didn't overheat using simple programs like iMovie!

Apple, please STOP RELEASING UPDATES that are not ready!

This is the same problem I am experiencing. Since updating to Sierra my Macbook will be dead each time I open it after putting it to sleep unless it is plugged in -defeats the purpose of a laptop. If it hasn't yet died it is burning hot.

Exactly the same here.

Macbook Gold 12"  and a friend With macbook pro 17" 2015.

I love all apple products but i am also rational , i will stop buying them if they will continue like this. Also iOS10 biiig problem with battery ( the internet is full of complains) - but this is another subject.

Steve Jobs was a perfectionist he will never let this happend.

So, any FIxes ??

I want my Capitan Back ((

I'll wait for the 10.12.1 update, and if that does not fix this issue I'll revert to El Capitain

(The best OS X was Snow Leopard)