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Mountain Lion Found to Reduce Battery Life By 38%

Mountain Lion Found to Reduce Battery Life By 38%

Posted August 8, 2012 at 7:12pm by iClarified
After numerous reports of poor battery performance under OS X Mountain Lion, ArsTechnica performed tests that confirmed a 38% reduction in battery life.

Our own testing revealed similar (and significant) drops in battery runtime after installing Mountain Lion. In previous tests, we were able to regularly achieve just over 8 hours of use by relying solely on our Retina MacBook Pro's integrated Intel HD4000 GPU. Performing the same "real-world" test using the same software applications and usage pattern, we never got the Retina MacBook Pro to run for more than a few minutes past 5 hours after a full charge.

Steve_c, a user contacted by Apple Support about the issue, confirmed it was software based. "I can confirm this is definitely a software (OS) issue, as the guy that was dealing with me said that an update will be issued via the [Mac App Store] as soon as they can work a fix."


Apple hasn't officially confirmed a fix is coming but the site did forward all their test results to the company for analysis.

Let us know if you've experienced an issue with battery life after installing OS X Mountain Lion in the comments.

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Mountain Lion Found to Reduce Battery Life By 38%


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Comments (14)
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Breix
Breix - August 10, 2012 at 3:10pm
Damn that sucks!
Jo Bean
Jo Bean - August 9, 2012 at 12:42pm
Yup.. I figured there were poor battery issues on my 17" MBP (early 2011 ver) but I thought it was my imagination.. hope Apple provides an update soon!! It's just about bearable for now..
Gamosas
Gamosas - August 9, 2012 at 10:51am
Theloume villo
James123
James123 - August 9, 2012 at 4:30am
Lol. Funny
Peter
Peter - August 9, 2012 at 3:49am
Poor battery after installed MT Lion. So went back to Lion and battery performance is last longer. Will wait till they upgrade.
Haider
Haider - August 9, 2012 at 2:03am
Noticed fast battery drainage after installing ML OS X on my MacBook pro.
JohnGraham
JohnGraham - August 9, 2012 at 1:44am
Noticed significant battery decrease on Macbook Retina display since Mountain Lion update, even with notifications all turned off. Hope they sort it out soon!
Mardro
Mardro - August 9, 2012 at 12:12am
I have a Macbook Air and used to last 4.5 hours after a full charge now i cant get more than 3 hours. Using the same applications all the time
joyz
joyz - August 10, 2012 at 11:27pm
4.5 hr on mb air? Either you a new battery or there is something very wrong
AppleMan12
AppleMan12 - August 8, 2012 at 11:20pm
Not so good for "world's most advanced OS" :/ ...
asaadsaleh
asaadsaleh - August 8, 2012 at 8:17pm
it was on sleep since yesterday, i did some tasks including connecting a superdrive for viewing some photos, now i'm using it just for surfing the net, and actually updating the Xcode, light is dimmed to half, key lights half as well, the percentage is now: 76% and 5.24 hrs remaining. i didn't notice that it is loosing power fast,
joyz
joyz - August 8, 2012 at 7:39pm
Maybe if peeps turn off all the notifications... Perhaps battery life will extend ....
Derp
Derp - August 10, 2012 at 12:23am
Cool story bro!
Drew
Drew - August 8, 2012 at 7:29pm
I have an aluminum MacBook (not a pro) that was produced for a short time and I saw a significant decrease in battery on lion and standby times that were about a day on a full charge. With mountain lion my battery life has increased to over 2 hours again and standby time has increased greatly, maybe only loosing 5% in a day now. Perhapse I just had a bad install but mountain lion has done wonders for my little old MacBook.
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