15" i7 matte high res MBP getting 2 hours of battery?

[Meever]

I know the i7 and the high res takes a bit more juice but 2 hours seems way too low....

Half brightness, wifi on, intel gpu only with light browsing....

Not getting the advertised 8-9 hours is one thing but getting 1/4th of it? Is that normal? Am I missing something?

 

[alust2013]

I know the i7 and the high res takes a bit more juice but 2 hours seems way too low....

Half brightness, wifi on, intel gpu only with light browsing....

Not getting the advertised 8-9 hours is one thing but getting 1/4th of it? Is that normal? Am I missing something?

That is ridiculously low. I get 3.5 hours or better on my 5 hour battery

 

[spinnerlys]

Have you calibrated your battery yet?

This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ

Apple on notebook batteries

Apple Portable: Calibrating your computer's battery for best performance

Laptop Battery Guide

Also have a look at Activity Monitor ( Applications / Utilities / ) and select All Processes and sort by CPU to see what the culprit may be.

image below uses sorting by CPU as an example

 

[alust2013]

@spinnerlys, what exactly is calibrating going to do? It doesn't affect how long the battery actually lasts, just how accurate the time remaining estimation is.

 

[emt377]

That's incredibly low. I get over 5 hours on my 15" MBP i7. Calibrate the battery and make sure you don't have a process stuck sucking CPU. Especially browser tabs with flash widgets running are prone to do that.

 

[GGJstudios]

@spinnerlys, what exactly is calibrating going to do? It doesn't affect how long the battery actually lasts, just how accurate the time remaining estimation is.

Many who claim they're only getting x hours on their battery aren't really running on battery until it shuts down to determine the time. They're looking at something like Coconut battery or iStat Pro to see the estimated time remaining, assuming it's accurate. Calibrating the battery makes that reading more accurate.

If the OP is, indeed, getting only 2 hours of battery life before it shuts down, calibrating won't affect that.

 

[spinnerlys]

@spinnerlys, what exactly is calibrating going to do? It doesn't affect how long the battery actually lasts, just how accurate the time remaining estimation is.

Maybe the reporting is the problem, but it can also be a runaway process, thus my addition of looking at the Activity Monitor.

As there are many threads about battery usage and low battery times, I included a link to MRoogle to find them, as in many of those threads, a calibration solved the reporting issue, and as the OP didn't write, how s/he came upon those hours, I included the question about calibration to make sure, it is either that or it is not that. Just covering the bases, as the thousands of already existing threads do too.

OP, also have a look at iStat Pro or Coconut Battery or System Profiler > Power to see what your health is.