Mavericks 10.9.2. drains my 2013 MBA's battery incredibly fast while sleeping.

I have never in the past, it is only now that this malfunction occurs that it has drained to 0%. The first time I thought it was a fluke, the second time I realized there was a problem. Now, I must test essgar's keyboard light solution and I suppose I can test the solution without draining it to 0%, but I will need to know what the rate of drain might be. Any suggestions?

Also, if in fact draining to 0% issue has been caused by 10.9.2, and it could have caused serious damage to my battery, do you think Apple would change out my MB Air since this update caused such potential damage?

HAH! Good luck....ever since Steve Jobs passed away, Apple doesn't care about you or fixing your stuff. Fact.

Re drain rate: the keyboard light drained, for me, about 30% of battery/12 hours. I imagine it depends on how bright it was when it was supposed to sleep, which in turn would (I think) depend on ambient light level at the time.

After I updated to 10.9.2 (I have a MBP), I also suffered the drain to 0% overnight. Last night, it only drained maybe 30%, but it fully powered off and needed to be rebooted this morning.

My keyboard preferences were set to turn off the light never, so I've fixed that and we will see if, tonight, it behaves like it used to before the update.

Philip

Well, it turns out that turning off the keyboard light more quickly does *NOT* solve the problem. Closing the lid of the MBP does not always put it to sleep.

I hope that someone who has got a support ticket escalated will update this thread with the solution once their issue is resolved.

Yeah, I have the same problem. BEFORE 10.9.2 everything seemed OK, just put the machine to sleep at night and next morning it had used maybe 5% battery max. Now it uses a LOT of battery overnight ... sometimes more than 70% and once it shutdown. I've looked at console and see a LOT of activity during the night while it's supposed to be sleeping, usually in "batches" ... a bunch of things at midnight, another bunch at 3am ... and 6am ... but the times vary. Often the machine is "hot" in the morning before I wake it up ... although the last activity on console was perhaps 1-2 hours earlier. So it seems on the surface that OS is running checks etc while it's asleep (ie temporarily waking it up) but sometimes forgetting to put it back to sleep properly. I've been through all the apple suggestions for saving battery life and have things like power nap disabled, to no avail. It seems to be a 10.9.2 issue?

I'm having the same problem. My machine can't sleep overnight for one of two reasons:

1. The battery drains to 0%.

2. I get a sleep/wake failure and the machine has rebooted.

This is repeatable every time, but it doesn't happen immediately. I can put the machine to sleep during the day for short periods (an hour maybe) and nothing happens.

Something happens during a long sleep overnight that causes one of the above every time. This only started on 10.9.2. Prior to that I had the issue where pressing a key immediately after entering sleep crashed the machine. That's now fixed.

Mid 2013 MBA i7

Power Nap disabled.

Keyboard light set to turn off after 1 min.

I'm usually running VMWARE Fusion all the time, anyone else?

Hi all. Yes, same problem. I'm running Parallels with a Windows 7 VM and I've found that if I close down the VM, the battery life is good again. So I;ve contacted parallels support (very fast response) and they are looking into it. Sure, annoying to close down the VM every night, but at least it's solving the problem ... my theory is that the Mac is waking up during the night (to do it's routine stuff) but NOT going back to sleep again because the VM is running? Hope this helps ... try your VM off? Geoff

I'm not running parallels, but I am running VMWare Fusion....

Anybody else who has this problem -- are you running virtual machine software? Could this be the common link?

Same issue. I have updated to 10.9.2 last night, charged it and unplugged it. Overhight it has gone from 100% charged to 0%.

Not running virtual software. Definitely not the issue.

VMware and Parallells are definitely NOT the issue. I don't have these installed, but witness a complete battery drain by morning.

That's REALLY interesting. I thought it was DEFINITELY a 10.9.2 issue (only started when I "upgraded" - thanks a lot, Apple!) but the problem has now gone away since I started to "suspend" the VM overnight. I have the nice folk at parallels support looking into it ... their developer team is checking out 10.9.2 compatibility now. Hope to have an anser soon?! : )

Could someone please confirm whether the drain occurs daily or ramdomly. Last night i have put my laptop into sleep mode by closing the lid. It was 100% charged. This morning it was still sitting at 100%. Very strange.