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Thinkdiff
MVM,
join:2001-08-07
Bronx, NY

Thinkdiff

MVM,

Reduced Battery Life Under Mountain Lion

Poll
Are you seeing reduced battery life on your laptop running ML?

Yes - slightly less

Yes - half as much

Yes - significantly less

No


Votes:11




Anybody else experiencing crappy battery life after upgrading to Mountain Lion?

I just noticed it on my 2011 MBP over the last few days and was about to post when I saw this:

»www.macrumors.com/2012/0 ··· ry-life/

Seems to be a pretty widespread problem. I haven't changed any of my habits and always turn off the discrete graphics. At 77%, OS X is estimating 2hr of battery life right now. I typically get 6+ hours, so this is a huge decrease for me.

skeechan
Ai Otsukaholic
Premium Member
join:2012-01-26
AA169|170

skeechan

Premium Member

I'm not seeing any difference with my 2011 MBA or 2009 13" C2D MBP...at least that I can tell. Both of mine have SSD's, maybe if you are chewing battery it is drive churn.

HiVolt
Premium Member
join:2000-12-28
Toronto, ON

HiVolt

Premium Member

People are reporting it with SSD machines too.

I don't have an Apple laptop anymore so I can't comment.

skeechan
Ai Otsukaholic
Premium Member
join:2012-01-26
AA169|170

skeechan

Premium Member

I wonder if it is specific to particular notebook models.

HiVolt
Premium Member
join:2000-12-28
Toronto, ON

HiVolt

Premium Member

said by skeechan:

I wonder if it is specific to particular notebook models.

It's possible, I bet the culprit is a driver for either cpu or gpu that has a bug in power management.

skeechan
Ai Otsukaholic
Premium Member
join:2012-01-26
AA169|170

skeechan

Premium Member

He'll join acadiel See Profile waiting for driver fixes in .1 We'll know what's in the works as soon as the first .1 is seeded which is supposed to be really soon.

Thinkdiff
MVM,
join:2001-08-07
Bronx, NY

Thinkdiff to skeechan

MVM,

to skeechan
I have a SSD and Magnetic HD in my MBP. I originally thought maybe the regular HD was spinning up too often, but I also noticed poor battery life after unmounting it completely (and spinning it down).

TamaraB
Question The Current Paradigm
Premium Member
join:2000-11-08
Da Bronx
·Verizon FiOS
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TamaraB to Thinkdiff

Premium Member

to Thinkdiff
said by Thinkdiff:

Anybody else experiencing crappy battery life after upgrading to Mountain Lion?

I haven't noticed any difference on my late 2011 MBA which has an SSD drive. It's not easy to tell however because I now put the thing to sleep plugged in so power nap is active, so the MBA is always at 100% when I take it out. The few times I have used it remotely (shutting it down first) I have not noticed any degradation in battery life.

EDIT: It's a mid 2012 13"

Bob