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Mavericks MacBook Air 2013 Battery Draining

Hello,


I recently installed Mavericks onto my Macbook Air 2013, Haswell, 128GB i5 model

I find that the battery drains very quickly; in general it only shows an estimate of less than 6 hours with just Chrome open. Before it used to be 10-12 hours+. I used to not notice when the battery percentage would go down; now every few minutes I notice it slowly decreasing.

I read that the computer needs time to index the hard drive but I do not see the Spotlight indexing.

What is going on? Does the computer need to go through one cycle of almost draining the battery from full in order to accurately preserve energy?

The computer went from 100% to around 78% over the span of around 2 hours... not good.


Why is my computer showing a decrease in battery life when Mavericks is supposed to increase it dramatically? Typing this message in a span of 10 minutes already dropped my battery life around 1-2%. (No hardware problems; flawless on Mountain Lion)


Thanks,


Sam

MacBook Air, OS X Mountain Lion (10.8.5)

Posted on Oct 23, 2013 9:43 AM

Reply
361 replies

Jan 18, 2014 3:21 AM in response to scintoon

just bought 2013 MBA 13, after few hours of using I've updated to Mavericks and then it says about 6:37 hours on 100% charge and after that it increased to more than 9 hours on 96%, I can't estimate real battery life, because had only 1 day with it and all work was separated, probably it didn't calibrate yet.

Jan 18, 2014 7:18 AM in response to scintoon

OK, guys. After many calls to Apple, I finally had to back up my data to time machine, erase my HD and use the Migration Assistant to transfer my stuff back to my HD from my backup.


Now I have great battery life.


My apple advisor speculated that there may be a bug in the software and a clean install is necessary.


So far, so good. We'll see if it lasts.


My problem was that it kept waking up when in hibernate mode and drained the battery.


So, for what it's worth, a fix.

Jan 27, 2014 1:03 PM in response to scintoon

Hi everyone,


I had this problem too, on a MBA 13 2013, after I upgraded to Mavericks. After trying the standard gamut of suggestions (resetting the SMC, deleting unnecessary apps, switching off Powernap, fixing disk permissions), and getting useless advice from three different Apple support techs, I finally found a fix that worked for me. All credit to Apple support tech #4, Phillip, wherever he may be.


The problem was a software conflict between Mavericks and Avaast antivirus. Presumably there will be other third-party apps that aren't yet streamlined for Mavericks, and those might also be causing a similar problem. This was diagnosed by going


Apple icon --> About this Mac --> More info --> System Report --> Software (drop-down in the left menu) --> Logs --> Power management logs.


Once that log is loaded, you can run through it and find the time when you last tried to put your Mac to sleep. If any apps are keeping the system awake, they should pop up in the log. Look for patterns; recurring activity from the same apps. If you can see anything like that, go and take a close look at the suspect app(s) and check their preferences to make sure they're not set to update every 5 minutes, or whatever. In my case, once I opened Avaast, it was obvious that it just wasn't working properly and needed to be deleted. Once deleted, the battery problem went away. Whereas previously it would drain from 100-->0% overnight, last night I put the machine to sleep and 7 hours later woke it up to find it still had 100% battery charge. Such a relief!


Good luck!

Jan 28, 2014 12:36 AM in response to kyuubi_1692


kyuubi_1692 wrote:


MacBook Air 13 Mid 2012, 250 Charge Cycles and service Battery!! :\



Counting charge cycles means next to nothing



Cycle counting doesnt amount to much at all except in LONG TERM.


I can, on purpose if so inclined, kill a battery in 100+ cycles or less due to mistreatment


People with 300, 200 or fewer cycles after 2-3 years have their Macbooks always plugged in and on charge which isnt a good thing at all.




Keep it plugged in when near a socket so you keep the charging cycles down on your LiPo (lithium polymer) cells / battery, but not plugged in all the time. When not being used for several hours, turn it off.


http://www.apple.com/batteries/notebooks.html

"Apple does not recommend leaving your portable plugged in all the time."


General rule to remember of Lithium batteries is:

Never drain them LOW & dont always/often store them HIGH


While cycle count is commonly seen to be the “miles” on your Lithium Ion pack cell in your Macbook, which they are, this distinction is not a fine line at all, and it is a big misconception to “count charge cycles”


*A person who has, for example, 300 charge cycles on their battery and is recharging at say 50-60% remaining of a 100% charge has better battery usage and care than another person who has 300 charge cycles at say 15% remaining on a 100% charge.


DoD (depth of discharge) is far more important on the wear and tear on your Macbook battery than any mere charge cycle count. *There is no set “mile” or wear from a charge cycle in general OR in specific.


As such, contrary to popular conception, counting cycles is not conclusive whatsoever, rather the amount of deep DoD on an averaged scale of its use and charging conditions.

(as a very rough analogy would be 20,000 hard miles put on a car vs. 80,000 good miles being something similar)


Amount of deep DOD (depth of discharges) matters, not charge cycles except in long term ideal treatment of a battery

meaning as per Lithium batteries 'riding' a battery harshly into the ground every 'mile' accounts for far far more wear than gently 'riding' a lithium battery many many miles.

Jan 28, 2014 1:07 AM in response to PlotinusVeritas

While I understand what you mean by Charge Cycles not being the "miles" for the battery wear and tear, but its only been 13 months ( yes, right after my warranty ends) with the MBA .

And having used a MBP for 3 years with 600 CC and still no sign of service battery as well as a decent 3 hr battery life, I can surely say that the cause of the service battery is the Mavericks update. The problem occured within a week after the update. The battery life was much better and there was no Service battery warning before it.

Not only that, this problem started a month ago when I contacted the customer care. They simply asked me to do an SMC reset, which removed the warning for a day. The full charge capacity of the battery has been decreasing ever since. Within the next few months its going to reach a level where I won't be able to run the notebook without the power plugged in.

I am not sure there is a mistreatment as you mentioned that can cause such a poor battery life in 13 months. Actually just 1 week , since everything was great before the upgrade.

Feb 1, 2014 6:37 AM in response to John Galt

I just got a new rMBP 13" and the battery life was 5-6 hrs. I stopped using Chrome and switched to Safari, battery life jumped to 11 hrs! In the energy monitor I found that Safari can go into App Nap mode and draw 0.1 energy, but Chrome always stayed at 13 energy even when I minimized it.


There's a bug report for Chrome asking them to use Mavericks new energy efficient APIs. Until they do that it will burn your battery life super quick.

Mavericks MacBook Air 2013 Battery Draining

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