Your favorite Apple, iPhone, iPad, iOS, Jailbreak, and Cydia site.
Mac Newsforums, a part of the
09-11-2012, 04:20 AM #1
OS X 10.8.2 Reported to Restore MacBook Battery Life to OS X Lion Levels
It was previously reported that many users noticed a significant decrease in battery life on their notebooks after upgrading from OS X Lion to OS X Mountain Lion. Apple had been working on the fix and with OS X 10.8.2, which is currently in beta as OS X 10.8.1 did not resolve the issue for everyone. The folks over at The Mac Observer ran a study that shows that the testing build of OS X 10.8.2 completely restores battery life to OS X Lion levels, yielding approximately 390 minutes of power under the testing protocols, compared to the 260-275 minutes under OS 10.8.0 and 280-300 minutes under OS X 10.8.1. They had the following to say:
Just as we saw in our previous tests, the upgrade to 10.8 Mountain Lion decreased battery life significantly, by about 1 hour and 45 minutes, or 30 percent. The upgrade to 10.8.1 restored about 30 minutes of battery life for our MacBook Pro, an improvement for sure, but not nearly enough to regain lost ground.
The big change came with 10.8.2, which is still undergoing developer testing. Using the latest build, 12C35, we saw a tremendous increase in battery life, to the point where running time was a few minutes longer than even that of 10.6.8.
The study also shows that users experienced a similar but smaller effect on battery life with the introduction of OS X Lion, an issue that was not fully resolved until the release of OS X 10.7.3 over six months after the public debut of OS X Lion. It should be mentioned that not all notebook users experienced significant battery life reductions under OS X Mountain Lion, therefore it hasnít been identified what is causing the issue in the first place. For those of you who did experience issues though, it seems like 10.8.2 may resolve what youíve been going through.
Source: The Mac Observer
09-11-2012, 04:42 AM #2
mine seems 100% better since the last update
09-11-2012, 04:43 AM #3
Ya agree it's not 100% percent better. But last long since the update.
09-11-2012, 04:45 AM #4
Wait a min, i thought that SSD took less energy?
09-11-2012, 04:48 AM #5
Now if they could just fix the trackpads on the airs.
09-11-2012, 04:54 AM #6
09-11-2012, 07:17 AM #7
09-11-2012, 12:19 PM #8Take Another Look
09-11-2012, 02:47 PM #9
My battery life seems okay. However, since upgrading to 10.8.2, anytime the battery reaches zero I have problems. The computer starts overheating, multi touch trackpad functions stop working, and the battery loses 1-2% a minute. Restarting the computer once or sometimes twice seems to fix the issue, but obviously the computer runs into problems restoring a saved session.
09-11-2012, 06:24 PM #10
<b> who cares about the crap man </b>
09-11-2012, 09:03 PM #11
Toms Hardware article on this: Should You Upgrade? From A Hard Drive To An SSD : Hard Drive Versus SSD
09-11-2012, 09:20 PM #12
SSDs draw a few watts at most. Hard disks, however, can draw 10 W or more during sustained head movement. Modern SSDs don't even really get warm. Disk drives, on the other hand, often necessitate cooling. While normal front-to-back circulation through your case may be enough, the heat dissipation of your hard drive is something to think about as you build your system.
Also on this page of the article, that is reiterated again:
Benchmark Results: Power Draw And Efficiency : Should You Upgrade? From A Hard Drive To An SSD
So the question remains, why does the SSD in this chart consume more power?
Last edited by ishamiyal; 09-11-2012 at 09:47 PM.