Complete overnight battery drain when in sleep mode

Spot on. outforadance.. Looks like 10.8 reset the hibernation settings. Until I saw your fix I was having to restart my MBP constantly after putting it to sleep. It wouldn't wake. Now with my settings set to hibernation mode 1 I am back where when I wake up my mac it loads my screens and I am exactly back where I left off before putting it to sleep. Thanks a mill

This may sound weird but check your printer queue. Sometimes if something doesn't print properly it gets stuck in the queue and the machine keeps trying to print even when closed using up your battery. If there are any documents which have failed to print, delete them. This may solve your problem. Good luck!

This may sound weird but check your printer queues. Sometimes if something doesn't print properly it gets stuck in the queue and the machine keeps trying to print even when closed, using up your battery. In this case you will often hear the fans running. If there are any documents which have failed to print, delete them. This may solve your problem. Good luck!

Hi has apple responded to this post i can't see one

I had this problem with my MBP and iMac 5K (wake up in sleep mode automatically) and it was google drive app's fault, after I removed it, the problem solved for me

I have my rMBP 13" for 2 years now and had no problem with sleeping mode until recently. Currently using Sierra, but had no problems until a few days ago. A few days ago my Macbook started to drain overnight and when it was in my bag, I felt that it is warm when taking it out. Started to look on the internet for a solution and find this thread. By reading lomlam's observation I just remembered that a fey days ago I installed Google Drive app for the first time and that was the starting day I am experiencing the battery drain in sleep mode. Looked in console and I have a lot of activity loged from the Google Update Daemon all night. I rapidly uninstalled every google related product and the google update activity stopped. Now I have to wait for another night to see if my problem has been solved.

Thanks lomlam for this hint, I believe this was the problem in my case. I hope this description helps others as well.

I had a similar problem with my MBA mid-2012 when I upgraded to Sierra. Close the lid and the battery was dead the next morning. For me it took 2 steps:

1) Click on Settings >> iCloud and then checked box next to KeyChain but immediately unchecked using Cancel button. This alone stopped the secd process from running at near 100% CPU. I did not want this checked (do not want to place any credentials in Apple's servers) so I kept it unchecked. Amazingly this worked and secd stopped consuming CPU.

2) While step 1 took care of secd consuming CPU and slowing things down, I would still find a dead battery the next morning. I then ran the following form the command prompt:

sudo pmset hibernatemode 0

Some older laptops might work with a value of 1 but apparently 0 was required to put my MBA back into normal hibernation mode. Apparently, this setting is changed when you upgrade to Sierra (Thanks Apple!). If you want to know your existing setting (mine was set to 3), then use this command at the console prompt mentioned in another reply...

pmset -g | grep hibernatemode

My MBA displayed a value of 3 but after using the sudo command, it is now 0. I then left my lid closed in hibernation overnight and still had 100% battery the next day! All done!

Dear Apple - please leave our current settings along during upgrades. Otherwise, we may just keep our current OS.

I have observed that if I do not quit Safari, this happens on my MacBook Air. If I quit Safari, then drainage is within normal range. But why is Safari draining Battery of Macs?