I have a mid-2009 MacBook pro. When running Lion, my battery life was around six hours. After installing mountain lion, my battery life is about an hour and fifteen minutes.
Showing posts with label Mountain. Show all posts
Showing posts with label Mountain. Show all posts
Thursday, March 28, 2013
Wednesday, March 20, 2013
OSX Mountain Lion on Mac Book Pro 13"
So, I've read through some forums and they say that upgrading to OSX Mountain Lion onto a Mac Book Pro would drain the battery of it.
I wanted to ungrade my new mid 2012 Mac Book Pro (13 inch, 2.9GHz Dual-core Intel Core i7), but I'm afraid it will damage my notebook. Like I dk, the notebook would get too hot or something. So, I was wondering whether upgrading the Mac Book to OSX Mountain Lion would be a good idea or not?
Thanks.
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
Wednesday, March 13, 2013
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
Tuesday, February 26, 2013
Mountain Lion and Battery Capacity
I know that there has been much discussion about Mountain Lion and how quickly your laptop battery runs down when running it. But most of the discussion seems to assume that ML is consuming more power than its predecessors. I am starting a new thread because I wanted to suggest a different idea...
I'll start with a full disclosure - I have a five year old 15" MacBook Pro that has 4GB RAM. The battery has been fading gently over the years and the system has been telling me to service the battery for at least a year. I have not bothered because it all still worked for the ways that I use it. I thought that it was poor that after only 283 cycles I had 50% capacity when the usual measure is 80% after 300 cycles but hey, that's life. As I say, it still worked for how I use it and that is the important thing.
I upgraded to Mountain Lion last week (from Snow Leopard) and the battery life has plummeted. Using CoconutBattery the problem seems to be how ML measures the battery capacity. Snow Leopard reported that I had 50-60% of the design capacity in the battery. ML reports that it is 20% or less.
So, for me, it looks like ML is measuring a much lower capacity in the battery. Right now it thinks that I have 13% of the design capacity, fully charged my battery holds only 710mAh - that is not going to translate in to a lot of time away from the mains.
I did try to reset the battery using the approved calibration routine. Usually (under SL) , if run until it shuts itself down and then left on sleep overnight, the battery is fully discharged in the morning (and the sleep light has gone off). After being left last night the sleep light was still happily on - ie there was enough charge left in the "fully discharged" battery for it to sleep through the night, which is unusual.
So, I think that I am getting a poorer battery experience because ML is measuring less capacity in the battery. It thinks that there is 710mAh instead of the 2500mAh that SL measured. That means that each 1% of battery is only 7.1mAh instead of 25mAh, so each % is used up much more quickly and the battery life is much less.
Assuming that the extra 1790mAh that SL measured is still there it also explains why it was able to sleep all night on what should have been a fully discharged battery.
The question for Apple is why does ML measure a lower capacity and how does it fix it...
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
Friday, February 15, 2013
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
Help! MacBook Pro (Mountain Lion 10.8.2) battery percentage instantly dropped from 100% to 88% right after disconnecting the charger.
Help! I just realized that my MacBook Pro running on Mountain Lion 10.8.2 battery percentage instantly dropped from 100% to 88% right after disconnecting the charger. It's been 333 cycles, age 25months, and 88% battery health. Is it normal for the percentage to drop all the way down to 88 just right after unpluging the charger?
Thanks.
Wednesday, January 16, 2013
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
Friday, January 4, 2013
Wednesday, January 2, 2013
Mac OS X Mountain lion bug sometimes the programs don't like to lunch and I unplug the power cord what shall i do
Mac OS X Mountain lion bug sometimes the programs don't like to lunch and I unplug the power cord what shall i do
Tuesday, January 1, 2013
Battery life dropped considerably on Mountain Lion.
I upgraded to mountail Lion and now my battery life is about half of what it was before upgrading. Shouldn't the update improve battery life? Also, what can I do about this?
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