Mountain lion 10.8.2 battery life is worse !

Rediculous 2011 Aluminum 13" Macbook Pro lasted all day got a prompt to update Snow Leopard I think,Killed battery time and was running extremely hot. Updated to 10.8.2 while the batt temps are now reasonable I only get like 3, 3 1/2 Max. Should never have updated in the first place. But you get an Apple prompt to update you figure its something you should do.

http://support.apple.com/kb/TS3721?

Give it a few days and check it

Are you saying that Spotlight it to blame? I checked mine before I fell back and there was not indexing going on. It had been indexed from the release date on and the MacBook is fairly static with files other than the Safari caches and email.

Its been about a week and there is no improvement whatsoever. On top of that I cant listen to a stream without it buffering every two seconds. Im now on 49% and the comp has only been unplugged 2 hours ago. Im thouroughly disgusted atp. Not only did my wonderful long lasting breath of fresh air turn back into a PC. but it cost me $20.00 to get it this way. Why did Apple prompt me to update to an OS that killed my smoothly running engine? And as far as Spotlight its not a process thats even running according to activity monitor. I really thought the days of endless trouble shooting were over.

Yep, I'm relly ****** off with this. I changed over to Mac when I bought my MBP Retina in late June 2012. I couldn't have been more pleased with the change. Until Mountain Lion and the battery issues.

I've upgraded from Lion to 10.8.0, 10.8.1 and now 10.8.2 and the battery life is rubbish. I couldn't see any difference between 10.8.1 and 10.8.2.

I just run an Automator test as per MacObserver ( http://www.macobserver.com/tmo/article/os-x-battery-life-analysis-from-snow-leop ard-to-mountain-lion) . Using this test I got a little over 3 hours.

3 Hours!! That's some kind of joke isn't it.

This has be fixed soon or I'm off back to PC world.

Well I can tell by your name that ur a proper geezer innit!

why dont u downgrade to lion? I m am on 10.7.5 & happy!

PS, even if you go back to Windows apple still got your money.

I would gladly go back to 10.7.4 which I believe was the last OS that worked properly but I dont have the install discs anymore.

Yep, was thinking about that, but being a Mac newbie I'm a bit nervous ... and don't really have a clue what I'm doing...

I don't have any install discs, but I do have a Time Machine backup from a week or two before the upgrade and have a backup as the machine is now with Mountain Lion.

I read somewhere that I could do a CMD+OPT+R on startup and this will get the OS from when the machine was shipped. Is that right? Then I guess I just restore all the apps. docs etc from the Time Machine backup of Mountain Lion. Right?....

This is truly ridicolous, I have a MBP Late 2011, shipped with Lion and had at least 7 to 8 hours of battery life and that was using it like crazy. After upgrading to ML I'm down to 4 hours at 99%. Had a Genius Bar appointment done and was told to wait for 10.8.2 then when that came out a week or so ago Im still at the same battery life. I hope they can fix this. The wierd thing is in Lion my fans never ran at least I think they didnt, now I can here them pretty well using ML. Hopefully they can fix this issue.

I was expecting 10.8.2 would fix this battery issue, but like all of you, it is even worse. Help us Apple!

I tried an Internet Recovery - Lion (10.7) was listed as an option, but when I picked it there was an error message saying something like "new OS installed cant go back to this old one".

So I went to the Genius bar at an Apple store. The guy there said that you cant go back to the OS orinially installed as this was some kind of special build. He also said that the battery problems are fixed in 10.8.2, at which point I snorted...

He asked how I installed 10.8.2, which I did as a normal upgrade. AHA! He said, that's your problem - you need to do a clean install for the battery problem to be fixed.

This all sounds VERY dubious to me, but hey, what's there to lose? I'll ty the clean install in the next couple of days.

I'll post to let you know the results.

Oh, and how do you do a clean install?

But yea, tell us the result...

I was about to ask the same thing, well, guess there are guides for it, please let us know how did you do with it

http://eggfreckles.net/notes/installing-mountain-lion-clean/