Automatically sleeping a MacBook Air prior to battery reaching zero..?

Hi, does anyone know if there is a way to automatically 'sleep' a MacBook Air before the battery runs out?
I'm usually pretty good at plugging it back into the mains before it 'dies' but twice recently I have missed the warning for a low battery and it has 'died'.
There must be a setting or an app out there that will 'sleep' the laptop when the battery gets to a specified battery percentage or time remaining.
Btw, I have a late 2010 13" MacBook Air running Snow Leopard.

Tried hibernatemode to 25 and still not helpful at all.
Battery drained 8% after 10 hours of sleep while mode 25 should put my macbook air into deep sleep and consume very minimal power.
<Edited by Host>

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Macbook air energy usage - battery runs down whilst sleeping

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Tami ...
I turned off any automatic updating, stopped Sophos Antivirus from on-demand scanning.
Regardless of turning off updating ..... a/v software on Mac can cause a litany of problems.
Uninstall the Sophos a/v software > Removing Sophos Anti-Virus for Mac OS
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Sleep Hibernation MacBook Air 11, 2014 Mavericks

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Warning: Idle sleep timings for "Battery Power" may not behave as expected.
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Hi Daz1761,
This article has information about what you should do if your MacBook Air wakes from sleep and looses wifi connection -
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
Thanks for using Apple Support Communities.
Best,
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Can i find macbook air 11 inch battery life 7 hours ?

hello apple
can i find macbook air 11 inch battery life 7 hours ?
thanks

Well, the battery life for an 11 inch MacBook Air is 5 hours. The 13 inch Air has a 7 hour life.
Here's the specification:
MacBook Air (Mid 2012) - Technical Specifications

MacBook Air 2012 Severe Battery Drains While Sleeping

Hi there,
This isn't any new but I've looked through all posts I could.
I got a refurbished MacBook Air 2012 in July. In the first 2 weeks it worked fine (or I was noticed).
Then I noticed the battery drains fast while the system sleeps.
I have done tests in the past weeks; almost 20% of battery drain after slept a day.
I have tried everything I could: turn off PowerNap, no wake from BT devices, erase and reinstall OS
None of above helped.
I have tried to modify hibernatemode to 25 and it worked ok; 2% of battery dropped after 12 hours.
I took this to Apple in Taiwan and they told me they couldn't do anything about it because they think it's software conflicts which does't really have a solution but wait for OS updates. They did run a diagnostic and everything turns out to be fine.
I just did reinstall the OS again and I'll see whats going on tomorrow morning.
If still not getting better I will just use hibernatemode 25.
Anything recommandation is more than welcome.
Thanks.
My OS version is 10.8.3.

Tried hibernatemode to 25 and still not helpful at all.
Battery drained 8% after 10 hours of sleep while mode 25 should put my macbook air into deep sleep and consume very minimal power.
<Edited by Host>

Sleep wake macbook air

I have repeated crashes and restarts due to the sleep-wake features on my macbook air (11 inch, mid 2012). Is there any way to correct or clear any settings that may have gone wrong over time?

Try resetting PRAM and SMC.
Reset PRAM. http://support.apple.com/kb/PH4405
Reset SMC. http://support.apple.com/kb/HT3964
Choose the appropriate method.
"Resetting SMC on portables with a battery you should not remove on your own".

Macbook Air mid-2012 battery life issues -- a possible culprit ?

Hi all,
I've posted and followed a thread regarding diminished battery life for the mid-2012 MBA, when Mountain Lion was released. I never could fix the problem, was contacted by Apple but that didn't solve anything either.
The troubles I was (and still am) having with my MBA were :
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No change when I clean installed ML.
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My battery, after 13 months of use, had its capacity reduced to 70-80%, and has now been stable for one year at 70-80% capacity. It now lasts approximately 3 to 4 hours, and has never lasted longer than 5 hours since I upgraded to ML, which was a few weeks after the laptop was purchased...
I've tried everything that was posted on the forums, SMC resets, etc. Now to the (maybe) interesting stuff.
I stumbled today on something interesting. I was researching my issue to see if people with the same laptop, that followed the same firmware upgrade path than I did had similar issues. Long story short, a forum post led me to something interesting, located at /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/Plugins/ACPI_SM C_PlatformPlugin.kext/Contents/Resources
DISCLAIMER Whatever you do, do not try to remove / move anything in this folder.
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Cheers,
Hadrien
Message was edited by: hricca
Edited to add a screenshot of the plists directory.

I leave my LithiumIon battery plugged in when near an outlet. But I use it on battery down to 40% at least once a month.
Using Coconut battery (download from macupdate.com) you see my battery is just fine after 18 months:

MacBook Air mid-2011 battery problems

I have a mid-2011 MacBook Air, and I recently replaced the battery. Once the new battery was installed, the computer would operate from battery, but would not recognize the AC adapter and charge the battery. If I disconnected the battery, then the computer would power from the AC adapter. After searching this forum, I found that many, many users of practically all types of Mac laptops have similar problems. It seems that Apple has had this problem in various forms going back at least seven years. So, I found suggestions to reset the SMC, which I did. The reset procedure for the MacBook Air is supposed to be the CTRL-Shift-Option + Power button, however this did not work for me. Apple does not want users opening the case to their products, but I already had the case open to replace the battery, so I tried the alternate procedure of disconnecting the AC adapter and the battery, and holding down the power button for 5 seconds to reset the SMC. This worked, and I could operate from battery, or plug in the AC adapter to charge the battery.
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However, if I disconnect the AC adapter, it will not charge the battery after I re-connect it.
process elimination is extremely easy. Forget the thunderbolt connection.
1. you do not indicate having using another AC charger, regardless of your mention of it working "on 2 diff macs"
2. its unfortunate you didnt borrow your co-workers charger on YOUR Air, or did you?......, because you did NOT mention same.
The 2 capacitors on the charging block board of the charger can easily blow (one usually).
Borrow another charger , a NEW one and verify.
If same, its your IO board.
There's only a 3-component path to diagnose on a battery
1. charger
2. IO board
3. logic board
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Im going to assume the "new" battery is a genuine Apple battery and not an Ebay "cheap" clunker?
this is what on hand diagnostics and a volt meter are for, which cannot be done online.

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Quit Chrome and try Safari for a while. See whether there's an improvement.

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or
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Hello karagyozov,
The webpage linked below details a number of helpful tips and information that can help maximize the lifespan of your MacBook Air's battery.
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https://www.apple.com/batteries/maximizing-performance/#macbook
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I bought the new Macbook Air (13 in, i3, 8gb ram) about a month ago and have recently started noticing that my battery prediction has been way off. When I first got my Mac the prediction would be very accurate decreasing along with real time. Now the battery prediction jumps down in 10 minute intervals (ex 7:25 remaining, 7:05 remaining) within a couple of seconds and gives me an inaccurate numbers all the time (13:00 on 100% battery, 7:00 on 80% battery)
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Thanks for your time!

Because we rarely use the computer in a consistent manner during the entire charge cycle, the remaining time will jump around a bit, as the software that calculates remaining time takes into account new input from your usage characteristics from the previous calculation interval.
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Disable automatic sleep on macbook lid close

Is there ANY way to disable the macbook from going to sleep whenever I shut the lid? I'm very happy with my macbook overall, but the closing of the lid forcing it to sleep is making me not like that much more. Please help!!!

Try this: http://www.macupdate.com/info.php/id/10564
It really not a good idea to run the MacBook with the lid closed though, because the air is drawn in through the keyboard to cool the unit. With the lid closed, you could potentially overheat the MacBook.
-Bmer
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MacBook Air Mid-2013 Battery Draining FAST (about 5-6 hours at best)

I have been having problems with my Mac's battery draining very fast even on light usage. Simply using Safari will drain my battery in 5 to 6 hours, when my laptop would last the stated 12+ hours before when browsing the internet. I followed these steps yesterday...
Reset com.apple.finder.plist, com.apple.sidebarlists.plist and com.apple.desktop.plist
- Open a new finder window
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- Locate com.apple.sidebarlists.plist and rename it tocom.apple.sidebarlists_backup.plist
- Do the same for com.apple.desktop.plist. Note: This file was missing in my folder. If so: nevermind.
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- hold down the keys until you hear the startup sound the second time
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Hi hawknelson24,
It sounds like you have been on the right track. If you are looking for more options for troubleshooting your battery issue before potentially taking your Air in for service, you may find the following article helpful:
Mac notebooks: All about batteries
http://support.apple.com/kb/ht1446
Regards,
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I just got my new mac book air home and ran a full charge into the battery. Once i disconnected it from the power adapter i noticed the battery was still only showing around 4 hours of life. Nothing was running on the matchine at the time, other than a wifi connection.
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I've run the latest software updates and the same issue persists. My machine is an 11 inch 1.6GHz model running the i5 processor. I can see a few people have had issues in the past with eratic battery indicator behaviour but cant see any difinitive solution?

There is no definitive solution. The time remaining indicator provides an estimate only based on the current load on your system. When you first start using it, there will be more activity than normal as your system is set up and Spotlight indexes your files.
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Has anyone replaced their MacBook Air Late 2010 battery?

Looking at the iFixit replacement part, is it better to have Apple do it, or is it easy enough to handle? Does anyone know what Apple charges for battery replacement?

Here is the price list:
Ciao.

Automatically sleeping a MacBook Air prior to battery reaching zero..?

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