Macbook Battery

[sajaz]

my macbook only 1 month old. It is a white macbook, mid 2010 model. Apple says it has 10 hours battery. But my macbook can only work around 4,5 hours. Battery has only 12 cycles,
normally I do only web browsing and play music. I work with low screen brightness too. Why my macbook can't work 9,10 hours ???

 

[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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