Q: Battery life dropped considerably on Mountain Lion.

by the way, for the people that got calls from Apple, how did they go about calling you? Did you call tech support and then they followed up?

I have the same exact problem.

I'm a new Mac user.. I saw teh light with my macbook pro ha ha ha

When I got my MBP I was SO happy that I got the 7 + hours battery life!!! I was Awesome!!! but now, after the upgrade....now, if i unplug the cord (in full charge) i only get 4 hour!!! just like a regular PC...

NOOOOOO!!!! Apple please fix this!

I also have the severely-decreased battery life after upgrade. The part that really chaps my hide (besides not being able to make it through a day at school with my MBPr) is that the more times the battery is charged and discharged, the more the battery life decreases. Thus, in my eyes, the longer they take to address this, the more damage that is incurred on my expensive non-user-replacable battery.

jla12087 wrote:

 

by the way, for the people that got calls from Apple, how did they go about calling you? Did you call tech support and then they followed up?

No mate. They contacted me by e-mail after seeing my posts on here and asked if we could arrange a time to have a chat and look into the issue further. Going by what some others have said in the thread, they'll probably ask me to download some logging software then I can send them my system info.

I was quite surprised they contacted me. Great to see they're looking into it.

Be advised everyone, thankfully Apple are monitoring this forum and are looking into the problem..

I have no doubt a solution will be found. Mountain Lion 10.8.1 is going going out as beta in a few days, so with Apple working on it, the system logs from affected machines and the AppleSeed foks doing their thing we'll see an answer soon..

source - http://9to5mac.com/2012/08/08/appleseed-and-mac-developers-to-get-10-8-1-in-comi ng-days/

I just acquired a rMBP last week. I checked the estimated time of battery: 8 hours. Inmediately and before installing any app I upgraded to ML and it lasted only 5 hours under normal use: wi-fi web browsing, bluetooth on, display shining, some apps installed (ML, Pages and Autocad downloaded, it is about 2 GB downloaded in total). For the second charge, I turned off bluetooth and backlit and got 5 hours 30 minutes. Finally, for the third charge, I selected all the energy saving modes and after 2 hours the battery indicator is showing 82% and 8:37 minutes remaining. So it seems in my case the problem was keeping the display too bright and the discrete graphics mode on. Now I have the display and the graphics mode automatically selected by the computer and the battery seems to last over 8 hours. The problem is, graphics are worse and I like shining displays, and I haven´t spent 2500 bucks to get this low performance. I think I deserve 7 hours with discrete graphics, top brightness, bluetooth and backlit on. Don't I?

As to the sleep mode, I noted that it wasted energy (up to 10% in one night) in most occassions when I simply turned the display down but never when I selected it clicking on the sleep mode button.

Same issue for me.

yantaialec & jla12087

Yep they call you then will send you an app to installl on your MAC (203Kb) - you basically install it, agree to the terms of sharing the information, run it, it creates a file on your desktop (around 4Mb) and you email it back to Apple.

I think the reason they are followin this thread in particular is it is being referenced a lot in press coverage and is getting as big as an old Lion one once did that caused negative publicity for Apple, so clearly the size and occurance of this issue getting the presses eye is getting Apples also :O)

I wonder if they will end up being open with everyone as to what the real problem was - I recall the battery drain problem on the iPhone 4 and how that magical software update changed it all and they covered it with some story not related to what the problem really was.

At this point I dont care as long as it gets fixed :O) They have my logs now...

Hello,

I have the same problem with my accu under OS X MountianLion (MacBook 13" late 2008).

My battery-life dropped at least 1 until 1,5 hour down. 

Is there any solution to solve this problem?

Regards

Benny

Has anyone who has gotten a machine with Mountain Lion preinstalled experienced this problem?

I for one have and I'm pondering if I should just return my machine within the 14-day period and hope for a new one that does not have this problem.

As of right now, there is no permanent solution. A temporary one that worked  for me for one day is to use disk utility at startup and repair disk and permissions. when i did that, i got 8 hours on a full battery. It went back to the usual 4-5 hours though after a day though.

MikkelG, I wouldnt return the macbook. Apple is pretty good about fixing bugs and issues. thats just me though. Maybe if you return your macbook now and buy it again once a confirmed fix is out?

Thanks for the response :-)

I've only had the machine for two days so I still have 12 days to decide whether or not to return it. I was just thinking that maybe my machine wasn't affected by the ML battery problem and that I might just have a faulty battery. However, my machine do exhibit the "battery symptons" discussed in here e.g. 3-4 hour battery life.

@Zane81 can you try the following solution?

It fixed for me the 4h issue on my retina now with light usage I'm able to get 6a7h

cd ~/Library/Preferences/

cp com.apple.desktop.plist ~/Desktop     

This action is to preserve the file incase it works and it can be send to apple I deleted mine and cannot reproduce it at the moment

rm com.apple.desktop.plist

killall Dock

Hi MikkelG,  I too have a new Macbook that came preloaded with Mountain Lion.  I don't have the battery issue, but I haven't installed any additional apps other than what the computer came with.  Have you installed any third party apps? 

My istatnano shows my CPU is working it's bum off, but it won't show me the processes list so I can't see what is causing the CPU to work so hard. I haven't added anything extra since updating.

Willing to help Apple if they want to contact me

daimatt wrote:

 

My istatnano shows my CPU is working it's bum off, but it won't show me the processes list so I can't see what is causing the CPU to work so hard. I haven't added anything extra since updating.

 

Willing to help Apple if they want to contact me

Open Activity Monitor and see which processes!