A Fix for MAC OS X Lion reduces Battery Life

I tried to find out if there is a fix to the shorten battery life after the Max OS X Lion upgrade. Finally,  I found a fix. At this stage I am not sure if this is a real fix because I haven’t waited long enough to see how long my Mac Book Pro can last after a full charged. I can confirm that this is a real fix after I tested it for a few hours without the power supply connected to my mac book pro. I could get 6 -7 hours under normal use (before apply the fix, I could only get 3 hours use). If you are having a shorten battery life issue after you upgraded your MBP to Lion. I highly recommend you try the follow step. According to the Apple Support forum, these keys are to reset the power management module in the MBP.

The method was posted on Apple Support Forum as follow:

**** Thanks Justin’s comment below, please ensure you have the power supply connected when you do this****
1. Turn off the computer.
2. Hold down Ctrl+Option+shift
3. While holding down these button, press and hold the power button as well.
4. Hold all buttons for at least ten seconds.
5. power back on the computer.

After I have done this, at 98% battery level the battery life timing was showing 9:15. It seems longer than beforer I upgrade. Anyways, this reading at least make me feel more comfortable. I will let it run and see how the battery consumption is like after applying this “fix”.

*****Update : Please follow Dilin’s blog for a better fix. http://www.shaasthra.com/2011/08/revealed-mac-os-x-lion-battery-drain.html


20 responses to “A Fix for MAC OS X Lion reduces Battery Life

  1. Hey thanks for the tip. If you’re going to do this, make sure you have the MagSafe power adapter CONNECTED. If you run this fix without it connected, the computer will run with the fan at top speed, lose all information on battery performance, and stop charging.

    Thankfully, if you do run the fix without the MagSafe and your computer goes haywire, shut it down, plug in the magsafe, and run the fix again.

  2. I’ve listed some additional steps to be taken to ensure better battery life in Lion. You could check those out here: http://www.shaasthra.com/2011/07/how-to-revive-battery-life-after-os-x.html

    Seems problems like these are bringing us users together =)

    Dilin Anand

  3. Hi, at the 4 step “Hold all buttons for at least ten seconds.” Did you mean that is necessary press the 3 keys of keyboard + power button at the same time ?
    press the 3 keys, and power up the macbook pro ?


  4. presss 3 keys + power button

  5. Why does this work?

  6. I just worked for me, so I don’t know how it works.

  7. @Ben Lion battery usage is different from that of SL, but the microcontroller does not realize this change so it’s calculations are still based on the old SL monitored data. Thus the system shows erroneous battery life. I’ve listed and explained all the steps required for a SMC reset + batt. calibration procedure at my blog. Perhaps you might want to check it out.

  8. Resetting the MBP like this worked for me.

  9. Kasper D. C.

    Hi All.. Just had a chat with Apple support. Here in Denmark they had not heard of this problem. However he was about to get me to reset the CMS, witch I of cause did before I called them, but it didn’t help. Symptoms was 3-4 hours battery and a constant CPU temp at 80 deg.
    He’s guess was 3rd party software running in the background, not supported by Lion and therfore using a lot of resources.

    I found a “Processes” view in my iStat nano and guess what.. Something (witch I can’t remember the name of anymore) was running at 100%. After a trip to google I found that it was my Citrix Gateway Client that was running. After a uninstall my CPU is now at 40 deg. and battery time is back to normal. (12 hours it says.. will probably get down to the usual 8-9 hours pretty quick)

    So check with iStat nano if something is eating your resources 🙂

  10. Guys I have just made a breakthrough with the Lion battery problem. Howard you should check this out. The problem all along had been with the Apple auto graphics switching.

  11. Thanks for the great tips Howard and Dilin! Using both the fix posted above and the http://www.shaasthra.com/2011/08/revealed-mac-os-x-lion-battery-drain.html has really improved my battery greatly. I use integrated only when I am doing normal stuff like coding/surfing the web getting roughly 9.5-10 hours on the battery versus the 2-3 before the fixes. Then I switch to dynamic when I need it for graphic intensive stuff.

  12. Robert Anderson

    I went through this process and it made absolutely no difference in battery life. The problem is not power management, it is load on the battery from something that has changed in the OS.

    I installed Lion on two Mac Books, one Pro and one blackbook 13.3″ machine.
    The battery life was reduced from 5+ hours to 1.5 hrs on the Pro and from 3 hours to 1 hour on the Blackbook. Both laptops run very hot now also.

  13. Was on Snow Leopard on Macbook Pro 13 2010. Recently upgraded to Lion, my battery life also deteriorated greatly. Just did a SMC reset followed by a NVRAM reset. Fixed things for me! 🙂

    SMC reset: http://support.apple.com/kb/HT3964
    PRAM/NVRAM reset: http://support.apple.com/kb/HT1379

  14. Thanks for posting this howard.

    I have upgraded to 10.7.1 thru a clean install of 10.7 then update. I’ve reset the SMC and the Pram/nvram. Initially, there was a big improvement when the battery indicator showed that my MBP would last 7hrs. But after a while, and a few weeks use, my light to average battery life is at 4 to 5 hours with average use. (surfing via wifi, 25% brightness)

    I am still search for answers and hope 10.7.2 answers this problem…. In the meantime, I really hope apple acknowledges this problem.

  15. Does this work on SL as well?

    I have a 2011 13″ MBP @ 500GB & 2.7 GHz, and my battery is doing 2 hours only.

  16. @yougetitright

    Good info – I checked my iStat Pro and found I had a USB Print and Storage app running at 100% of CPU. Turning this off increased my time remaining from 1:15 to 2:32 with 42% Remaining and it’s still getting longer as it cools down. Phew! This has been driving me crazy for months and really bumming me out. Thanks for the heads up. I’ll be sure to pass it on to others.

  17. You should try out this Apple Mac OS Lion fix that I had mentioned earlier. It’s not a surefix, but hey, it’s worth the try right.

  18. +1 for the Citrix client resolution.

    My MacBook Air recently started running really hot, and the fan was really noisy, all the time, even when I had almost nothing running.

    After some googling, I found this comment on an Apple support forum.

    I uninstalled the Citrix VPN client, using the uninstaller on the disk image, and the fan noise (and heat) immediately disappeared. Rad.

    I will only be installing the Citrix client when I actually need it, and then immediately uninstalling it again.

  19. How do you uninstall USB print and storage app? I found the same problem with my recent upgrade to Lion.

  20. Used your fix on a Late 2010 White Macbook, and the battery life has improved dramatically improved. Wifi on, I get about 7 hours, instead of 2.

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