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OS X Lion Battery Life

I downloaded Lion last night and played around on it for a minute or two then put my MacBook on the charger and went to bed. I woke up this morning and turned on my white MacBook 13" with 100% battery. After just 3 hours, with my brightness on the second to lowest setting, my battery was at 35% so I stuck it back on the charger, waited until it was at 100% again, then took it off. Once more within about 4 hours my battery was dead. I never had this issue until after the Lion update. On Snow Leopard I could usually get 3 or 4 days outta my battery before I had to charge it. Anyone else having battery life issues after updating to Lion?

MacBook 13"

Posted on Jul 21, 2011 8:17 AM

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Posted on Jul 21, 2011 11:15 AM

Yeah I'm getting about 4 hours on my 2010 13" MacBook Pro since I installed Lion. The battery life is much worse than it was on Snow Leopard.

65 replies

Mar 23, 2012 1:34 PM in response to cocciasik

Update: I called Apple support, they have been very helpful!!!


The battery was actually "older" than it was supposed to be. After about 200 charge cycles I had a maximum power of 5200 mAh, too low---that value is expected after 1000 cycles, not 200. You can check this in the "Energy" section of your MacBook's details.


At the apple store they replaced the battery---for free. Now, with the new battery, it is 7255 mAh!!! Finally, I see 6 hours and a half of remaining battery 🙂

Apr 14, 2012 2:36 PM in response to User09

Hello All,


After a few weeks I realized that shutting down my macbook, and pulling the battery was a temporary fix. I have been performing the shut down restart action on a regular basis. I am still eating up a lot of RAM while running multiple Apps at the same time, and it seems to be a cumalitive issue. I am not very computer savvy to be able to search out the issue. I think it has someting to do with a log build up and a cache build up.


Anyway, today I downloaded the CCleaner and iBoostup Apps. IBoostup works well, but you need to make purchases to use all of the funsctions that the App provides. I also noted that it eats a bit of up RAM while performing it's functions. That being said, the App is good and it does it's job.


CCleaner is very simple and quick and It did not seem to eat up RAM while performing it's function. Both Apps freed up a lot of RAM on my Macbook after running. I plan to upgrade from 2 RAM to 4 RAM in the future, but in the meantime CCleaner is doing a good job, I recommend it and it's availible for free in the App Store.


PS - Lion 10.7.3 is not consuming my battery as ti did in the begining. I do not know if it related to cache and log build up. I do hope that OSX Mountain Lion corrects these little bugs.


I hope this information helps!

May 6, 2012 8:58 PM in response to Frankyb2100

For what it's worth...

I've been dealing with this for a while on a mid-2009 13" MacBook Pro. I installed Lion as an upgrade and my battery life sunk from 6+ hours to under 3. I tried a bunch of the suggestions in the previous, flame-ridden thread here to no avail. I eventually went back to Snow Leopard. A few weeks ago I had a new idea (and some time on my hands), so I tried something different.


After cloning a backup of my SL system, I did a fresh, bare-metal install of Lion and ran all the updates. I let it sit around for a while while Spotlight did its thing, then I did some light surfing and noticed that my battery life (mostly based on predictions from the battery indicator) was pretty close to what I was getting with Snow Leopard. I continued to do some testing and kept getting pretty good results. Then, I used the Migration Assistant to pull everything back from my Snow Leopard clone.


Remarkably, the battery life with Lion now remains pretty reasonable (5-6 hours) even when I'm working it fairly hard.


Disclaimer: This is my computer and my experience. If you get different results, please, it's not my fault. I am posting this here in the hope that it may help someone out.

OS X Lion Battery Life

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