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My battery life is abysmal on my Air now. It lasts a little less than half as long as it did under Lion. :(
 
My mid-2010 MBP actually has better battery life after the upgrade. I did do clean install (if that makes any difference).
 
Doesn't Mountain Lion have new features that keeps the laptop a little more active than it used to? PowerNap? iCloud syncing? Perhaps people are noticing that the battery is being used more when the laptop is sleeping. I haven't seen a dramatic drop in battery charge since upgrading.
 
Steve Jobs would never have allowed this to happen.

Enough with that crap. Mistakes happen. Look at OSX Lion. Pretty bad. Look at MobileMe, iOS 2, iPhone 3G launch, iOS 3.1 causing random rebooting, look at iPhone 4 antenna gate. List goes on. Apple is run by human beings. Humans make mistakes. Jobs wasn't perfect either.
 
Steve Jobs would never have allowed this to happen.

I think we should all get over the 'Steve jobs would never have let this happen' comments. How do you know what Steve would have allowed or would not have allowed. Were you his personal butler or something. You need to get over it now. Tim is in charge and he is leading apple nice and well.

Opps never saw the above post either. Good point ouimetnick
 
I've actually had improved battery life, because Reeder under ML no longer triggers the discrete GPU. Perhaps a fix will make it even better.

However, a ML update can't come fast enough. My own aggravations:

- Connecting to Exchange servers is FUBAR
- Screen sharing to Lion machines is broken
- Messages can't handle picture messages

Gah.
 
I have also noticed a significant drop in battery life when switching to ML on my 8 month old Late 2011 15". 109 cycles and 95% health, I get about 3 hours now with WiFi OFF, lowest brightness and integrated graphics.
 
What about reports of ML slowing down computers? I know a lot people that have been having that problem.
 
Steve Jobs would never have allowed this to happen.

Oh do shut up. :rolleyes:

The same thing happened with Lion and was explained as them 'fixing' the status as it had always been incorrect...or some other made up nonsense.
 
I've lost about an hour, an hour and a half of real time battery life (early 2011 base 13" MBP). Nothing major, but it'd be great to have it back ;)
 
i seem to have less bugs with my 34 months old mbp than my sisters new mba ^^

cant complain considering its age

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what i did notice however is that my mbp takes a lot longer to turn off compared to lion (SSD)
 
My 13inch early 2011 macbook pro is having the same problem, I watched a vlc video while doing some work (dont ask) any my battery dropped from 58% to 12% in 25 minutes. I have always done this and battery never dropped this rapidly until after my Mt. Lion install. Need to fix as I just bought a retina mbp and passing the 13in to my gf (thats what she said) and she will kill me if it doesnt work right after I convinced her to let me buy this almost $4k computer and give her the 13in
 
Enough with that crap. Mistakes happen. Look at OSX Lion. Pretty bad. Look at MobileMe, iOS 2, iPhone 3G launch, iOS 3.1 causing random rebooting, look at iPhone 4 antenna gate. List goes on. Apple is run by human beings. Humans make mistakes. Jobs wasn't perfect either.

It's pretty sad that you would defame Steve's character so soon after his death. You should be ashamed of yourself.
 
Honestly I wish that MR would do this sort of thing. If any website is on the pulse of issues like this that are easily testable and of general community interest MR is, so why not run some original reporting once in a while? It seems like all MR does these days is repost stuff from everywhere else.
 
i get the same battery life as before.

It looks like it happens to be related to ML and maybe a specific software. it's strange how it doesn't affect ALL SYSTEMS
 
And the big deal is?

This is the type of glitch that
1) happens all the time with .0 releases
2) is soon fixed in the .1 update.

Considering that Apple engineers and managers both eat their own dog food using their own products, there should be no worries whatsoever.
 
Same problem with Lion. For me the battery life litterally decreased from about 8 hours to 2 hours. Users were also reporting about the problem back then, but nothing happened. Hope, if Apple fixes it, that the battery life will be as before Lion:)
 
2011 MBP 15", seems about the same with all native OSX apps. Did an upgrade from Lion (10.7 was a fresh install), running most of the usual suspects as background apps.

My Parallels 7 + ML actually seems much better (but that could be mostly PD7 vs. PD6, upgraded right after L>ML).

I using gfxCardStatus (v2.2.1), with a power based trigger (battery = integrated, AC = discreet).

I'll have to monitor the wife's machine (2010 MBP13), also upgraded, but she's like me, mostly docked with AC power.

Cloud services running, all the defaults for Notification center, etc., nothing really tweaked towards lowered battery use.
 
I actually would have said the opposite. My 2011 MacBook Air actually seems to have better battery life on Mountain Lion.

Doing the exact same tasks as before I get 30 minutes to an hour more of battery life than before. And I'm on battery power all the time so I really notice the improvement.
 
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