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My MBP battery life has drastically reduced after Lion upgrade..anybody else see this symptom ?

My MBP used to get 7-8 hours on a full charge, after my upgrade to Lion yesterday night, I seem to be getting a max life of barely 3 hours....this is awful. Anybody see the same problem ?

MacBook Pro, Mac OS X (10.7)

Posted on Jul 21, 2011 12:22 PM

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46 replies

Jul 23, 2011 8:12 PM in response to SilvaSurfer06

So here's what I've found while monitoring the CPU usage in Activity Monitor...


  • I restart the computer, and let the CPU settle to around < 1% usage.
  • I open the App Store, browse around a little bit, CPU usage is around 1-6% most of the time. I quit the App Store and the CPU usage returns to around 1%. I also openned the Twitter and Sparrow apps. With all of those apps in "idle" state the CPU usage is still around 1%.
  • Now here's where it goes haywire... As soon as I open ANY WEB BROWSER (Chrome, Safari, or Firefox) my CPU usage instantly goes up to 15% and stays there, even when I'm not interacting with the browser. Now here's what's even crazier.. when I quit these browsers the CPU usage does NOT return back to 1%. It stays around 15% and the back of my MacBook starts to get really hot and the fans start spinning like crazy.


VERY ODD! Hope it gets fixed soon.

Jul 23, 2011 8:58 PM in response to Dustin Mcgrew

What happened in my case is that after installation of Lion, the full disk was re-indexed (spotlight). This took some hours, and of course increased CPU usage dramatically. However, after that, things went back to normal -- actually, much better than normal for what Safari is concerned: Safari was sometimes eating up all CPU in my Snow Leopard version. It now does not do it any longer.


Try waiting other few hours (let it on one full night (not on battery!) and see if it helps.

Jul 23, 2011 9:50 PM in response to geekygoof

We were having similar issues, that caused excessive drain of the battery, which were corrected in 3 ways.

1. We uninstalled a program, NeoOffice, that was not compatible with Lion, for which Activity Monitor indicated it was using over 100 % of the CPU's capacity. The NeoOffice web site indicates this incompatibility, and thus we now are using iWorks. Likely there are other such programs that people should check using the Activity Monitor and the program's supplier for information on compatibility.


2. The System Report generated by the System Information program in Lion indicated that my battery had a lot less capacity than I thought it should have, and it also said I needed to service the battery. I fully charged the battery, and then after a few hours, I ran a battery calibration: Operate the computer constantly off of the battery until it closes itself down and blacks out. Let it sit for at least 5 hours blacked out and not connected to any charger. Reconnect it to the charger 5 hours later and fully recharge it. At this point, I still got the message that I needed to service the battery, but there now was a greater battery capacity than before.


3. Finally I solved all excessive power draining and the message that the battery needed servicing by resetting the SMC (System Management Controller), http://support.apple.com/kb/HT3964. Shut down the computer, disconnect it from the power adaptor, remove the battery, press the power button for 5 seconds, put the battery back in the battery compartment, reconnect to the power adaptor, and restart the computer.


Results: No more excessive draining of the battery, and the System Information now says the battery's condition is normal. Also I now have a really good charging capacity of the battery.

Jul 24, 2011 3:05 AM in response to gbfluteman

You don't have to remove the battery. The support article has steps on how to reset for newer computers. See below:


Resetting the SMC on portables with a battery you should not remove on your own

Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).

  1. Shut down the computer.
  2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
  3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
  4. Release all the keys and the power button at the same time.
  5. Press the power button to turn on the computer.
    Note
    : The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

Jul 24, 2011 3:13 AM in response to KeanuReeves

Nice, I'll bare that in mind if it is an issue. I've found that part of my problem was just how much RAM Safari now uses. I'm using Rockmelt completely, now. I was using Rockmelt and then only using Safari as needed, but now that Rockmelt has an update for Lion, Safari isn't necessary.


Is it just me, or does anyone else find it annoying that the browsers that come with our OS's these days (whether it be Windows or Mac) are useless compared to their OpenSource counterparts?

Jul 24, 2011 7:03 PM in response to KeanuReeves

This is what I'm absolutely horrified about. I just bought my Mac, and the last thing I want is something as serious as this. It seems a lot of people have this very same problem. But, I'm also sure that there are people who have upgraded to Lion successfully. Do you think it's worth risking the upgrade? i might just wait until all of the bugs are ironed out...

My MBP battery life has drastically reduced after Lion upgrade..anybody else see this symptom ?

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