Macbook 8,2: Battery lasts about 1.5 hours.

[BJB Productions]

Hi all,
My work laptop seems to be having issues, is this normal:

It's 22 weeks old, 14 load cycles, health is 96%.

While using it for some light internet surfing, screen brightness low, fans running slow, no CD in or anything, my battery dies in about 1.5 hours. Would being connected as a network user have anything to do with this? Any ideas why?

Just wondering if it's worth IS looking at it. I have not done a full calibration yet, should I try that?

Thanks

 

[miles01110]

Calibration has nothing to do with actual battery life. It just calibrates your "percentage remaining" so your computer shuts off at 0% instead of at 20%.

 

[simsaladimbamba]

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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

Further reading:

Mac OS X: Reading system memory usage in Activity Monitor
Making The Most of Activity Monitor
What Is Activity Monitor (or How to Take Your Mac's Pulse)​

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

I have not done a full calibration yet, should I try that?

The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.

There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the following link for details.

This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​

 

[BJB Productions]

Nothing looks abnormal.

 

[simsaladimbamba]

Nothing looks abnormal.

Select ALL PROCESSES and sort by CPU, like in the screenshot I provided to explain how to use it.

 

[BJB Productions]

Sorted by CPU.

 

[BJB Productions]

Select ALL PROCESSES and sort by CPU, like in the screenshot I provided to explain how to use it.

I did that, nothing more than what I posted above.

 

[Srirama]

Select all processes from the drop down menu above.

 

[GGJstudios]

I did that, nothing more than what I posted above.

Change this to "All Processes".

​

 

[TheIguana]

I did that, nothing more than what I posted above.

Two things I see in there:

1) Skype is running and on your MBP it will force the use of the dedicated graphics which will reduce your battery life.
2) Flash is running on your Mac. Flash is, always has been, and always will be a battery killer.

 

[GGJstudios]

Two things I see in there:

1) Skype is running and on your MBP it will force the use of the dedicated graphics which will reduce your battery life.
2) Flash is running on your Mac. Flash is, always has been, and always will be a battery killer.

Both of those are addressed by the tips in the Battery FAQ I posted, using gfxCardStatus and ClickToFlash.