ML ='s Poor Battery Life for MBP?

[Keukasmallie]

Are there any rumors, recommendations, any hope for remedying the sudden decrease in battery life upon upgrading to ML on my early 2011 15" MBP?

Surely, others suffer the same problem, have the same concerns, but there seems to be no one addressing the problem other than recommending emptying caches, re-booting, etc.

Any sense Apple is working on a fix to the problem?

 

[GGJstudios]

There are many factors that impact your battery life, and it's far more likely that your reduced battery life is due to a process that's consuming system resources, rather than the OS version you're running. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.

The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

Apple Notebook Battery FAQ​

 

[Keukasmallie]

Thanks for the referral. I've read that article plus a number of others over the past several months (I can even recite the definition of load cycle.) since installing ML. I've scoured my start up list, caches, app usage, etc. to no avail. On Lion, I used approx. 20% of battery charge in a two hour AM session. Since installing ML, I use twice that amount of battery charge in the same time period. Same two hours worth of activity, same location, same wifi connection, etc.; the only change is the greatly decreased battery charge life.

Additionally, I've read posts from others noting the same thing, e.g., ML = rapid battery discharge compared to Lion.

It appears that on the iOS side of the house, upgrades in iOS have resulted in poorer battery life, and Apple has issued remedies; why couldn't that be the case w/ OS?

 

[GGJstudios]

Thanks for the referral. I've read that article plus a number of others over the past several months (I can even recite the definition of load cycle.) since installing ML. I've scoured my start up list, caches, app usage, etc. to no avail. On Lion, I used approx. 20% of battery charge in a two hour AM session. Since installing ML, I use twice that amount of battery charge in the same time period. Same two hours worth of activity, same location, same wifi connection, etc.; the only change is the greatly decreased battery charge life.

But it's not the same mix of processes as you were running on Lion. Follow every step of the following instructions precisely. Do not skip any steps.

1. Launch Activity Monitor
2. Change "My Processes" at the top to "All Processes"
3. Click on the "% CPU" column heading once or twice, so the arrow points downward (highest values on top).
   (If that column isn't visible, right-click on the column headings and check it, NOT "CPU Time")
4. Click on the System Memory tab at the bottom.
5. Take a screen shot of the entire Activity Monitor window, then scroll down to see the rest of the list, take another screen shot
6. Post your screenshots.

 

[Keukasmallie]

Here are the screen shots. Thanks for your patience, both in terms of addressing my concern and giving me an opportunity to do my first screenshot. I say the later hesitantly because I can't actually see them in the reply at this time.... OK, I saw them, then selected edit to add something. on the right-most screenshot, I didn't go any further down because all the %CPU values are 0.

 

[robvas]

Are there any rumors, recommendations, any hope for remedying the sudden decrease in battery life upon upgrading to ML on my early 2011 15" MBP?

Surely, others suffer the same problem, have the same concerns, but there seems to be no one addressing the problem other than recommending emptying caches, re-booting, etc.

Any sense Apple is working on a fix to the problem?

Assuming you are on 10.8.2, it's been fixed