Q: Battery life dropped considerably on Mountain Lion.

ll try this also.. n will hope that it works..

An update to my situation: left my MB charging all night, and I'm using it as I type connected to the power adapter. The battery indicator claims "97%" charged, and that the "Battery Is Charged." Nope, sorry OS X Mountain Lion--IT ISN'T. Some very weird stuff is going on here.

Really hope Apple gets on this within the next week because this story seems to be picking up more and more steam with each passing day, and it's a pretty egregious problem.

Also realized you seemingly can't choose to have the battery view switch to time remaining on the top bar by default...? Just another thing I noticed.

sorry guys, didn't see this thread first and posted the following in another one so...

...add me to the list, mountain lion is great, but i have pretty severe battery problems on my macbook pro 3,1. since i updated from lion my battery health dropped considerably and the menu status tells me to swap the battery soon. additionally i almost get just 60% of the battery life i got before. - all of a sudden!

Hey Csound1 - glad to see you back - spouting the same old garbage you did when we reported this issue from LION over in the 180 page thread. I lived with the problem for 9 months and now it's being taken seriously.

1. Yes, I removed all software - clean install and like many others here (even brand new machines, we are NOT getting what is advertised.

2. The estimate is extremely awesome. It's very accurate actually. I find, if it say's I'll get 2 hours and I staying doing similar things, I'll get 2 hours. Apple has been good at estimation on this for years and yet you go on as if we are all idiots and don't know how to interpret battery life. We all KNOW our electric toothbruses will stay good for 21 days if we clean our teeth twice a day and we all KNOW they won't stay good for 1 day if we clean our teeth every 15 minutes.

What makes me laugh about your posts is you pick one postee to pick up and have no comment to the hundreds that are here, all with similar symptoms and yet all with disimmilar environments (new to old).

Franc_Iphone wrote:

 

Hey Csound1 - glad to see you back - spouting the same old garbage you did when we reported this issue from LION over in the 180 page thread. I lived with the problem for 9 months and now it's being taken seriously.

 

1. Yes, I removed all software - clean install and like many others here (even brand new machines, we are NOT getting what is advertised.

2. The estimate is extremely awesome. It's very accurate actually. I find, if it say's I'll get 2 hours and I staying doing similar things, I'll get 2 hours. Apple has been good at estimation on this for years and yet you go on as if we are all idiots and don't know how to interpret battery life. We all KNOW our electric toothbruses will stay good for 21 days if we clean our teeth twice a day and we all KNOW they won't stay good for 1 day if we clean our teeth every 15 minutes.

 

What makes me laugh about your posts is you pick one postee to pick up and have no comment to the hundreds that are here, all with similar symptoms and yet all with disimmilar environments (new to old).

I have no comment for you Franc_ I have made it clear that I have no faith in your observations of an estimated battery life.

Ahh, got you. I never asked for your faith in me BUT I see you are not man enough to comment for the other posts on this forum (42 pages) or the other one (176 pages) then? It's in all of our imaginiations! Or the survey posted earlier of the number of people with problems. Ah, sigh. That's why we love people who contribute who don't have the problem and implies everyone else's are imaginary.

Franc_Iphone wrote:

 

Ahh, got you. I never asked for your faith in me BUT I see you are not man enough to comment for the other posts on this forum (42 pages) or the other one (176 pages) then? It's in all of our imaginiations! Or the survey posted earlier of the number of people with problems. Ah, sigh. That's why we love people who contribute who don't have the problem and implies everyone else's are imaginary.

As you are clearly aware that the problem is confined to some, rather than all

"That's why we love people who contribute who don't have the problem"

But can't make the attempt to narrow it down, preferring to rant about bugs rather than possible user / installation / system errors I would say you are on the opposite side of the fence of reality to me, and as I said before, having read all your earlier rants it matters little to me what you say, now do me a favor and ignore me, I promise will return it.

It's even worst than i was thinking!

Yesterday :

At the beginning : battery : 100%
Safari 6 with FaceBook, 9gag and other stupid things. (ClickToFlash activated to prevent Flash usage and Adblock too).

After 3h and about 30 min : 5%.

Everytime a page is charged : CPU 50~100% then go back to 15-30%

I fraking love ML.. Hope it will be fix soon :/

(MacBook Pro 13" mid-2010, battery health : 90%)

Same problem. Latest Macbook Air, 13 inch. Heating problems as well, never had them before.

Good News

I repaired permissions, it found some issues but mostly related to Java, so i guess this was not important. I'm convinced repairing permissions is just Voodoo for this kind of problems, snake oil. Just for the record ;-)

Now the important part:

I shut down, performed an SMC reset like 2 times to be sure since i never did it before on a MacBook Air. The adapter changed lights so it looks like it did it's thing.

Okay, now the funny stuff: I powerd my beloved baby on and the battery indicator began to increase from 47% to now 56% over the next 20 minutes or so, still climbing. While writing this it reaches 57%. Looks like SMC reset fixed it.

Try it! (Now it is 59%) Man, this is a kind of magic. Or just what the System Management Controller is meant for :-)

... now on 61% (This post took me 5 minutes or so, kids you know …)

Edit: I had the power still connected, but usually it does not recharge that fast.

Hi just my 2 cents, possible won't be for every case but I got it currently resolved my troubles with the time indication on a brand new retina macbook pro. not sure for regular macbook's but on the retina there is a corrupted file after doing the steps below I saw my battery time getting normal.

------

I did first a reset of the PRAM by following this http://support.apple.com/kb/HT1379

Second I booted into my normal enviroment and followed the instructions below.

“Open Terminal:

Type the following, hit enter after each line:

cd ~/Library/Preferences/

rm com.apple.desktop.plist

killall Dock”

And in my final step I installed gfxCardStatus V2.2.1 and selected integraded only for battery.

Result: 92% is now giving me 9:22 where as before I could get only max 4h

Mid-2010 13" MacBook Pro

With nothing but Safari running, the bottom gets unconfortably hot and occasionally the fan will even kick on. I can't give an accurate time estimate from before the Mountain Lion update, but I used to be able to run for hours before I'd even notice the battery meter tick down any significant amout. Now, with less than a couple hours of use, it's already dropping under 20%.

Take a look in Activity monitor for any processes using a large amount of cpu time, post back if any.

Sorting by the CPU column, there's a process called "Safari Web Content" that jumps between 1 and 8%.

Edit: Nothing else of any significance.

Message was edited by: David Krug

Activity Monitor did not help for me: No power-eating high CPU processes to be seen. SMC reset seemed to help in my case.