Macbook pro (15" - end 2011) battery life only works 3 hours - can you help me!!?

Hi since i updated to Mountain Lion, my Macbook pro 15" (december 2011) only works for 3 hours instead of 5 hours with Lion.
I've been waiting for 6 months now a release from Apple to fix this. Are you planning to do something for users like me?
for reminder number of battery cycle as up to today = 131...
Is there someone who can help me? or facing the same problem?
Thank you

Apple doesn't read the threads. File feedback is probably the best way to reach them. You won't get an answer.
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A1281 is the battery i got for my 15inch MBP. Is the battery life only 2 - 3 hours for a new battery on this device.

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This is from Apple.
2 to 3 hours seems very low.
what is teh standard or advertised spec for a 15 inch Macbook Pro with this battery.
I would like to know so that i can return it if this is not normal.
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I say it depends on your model? average usage is about 3-4 hours depending on what you use and how you use it. Adobe Flash player eats a lot of battery power so if you are on a web page and has flash player, likely that it's eating up battery because of it's power thirsty.
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If you have a backlight keyboard, in a broad daylight, it's not necessary to have it on.
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Welcome to the Apple Support Communities!
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Why don't you look through this to insure you did everything correctly:
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Iandelli wrote:
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Hugo Boss 5321 wrote:
One of the key things I have realised from these discussions is that people are saying it's bad to leave a mac charging, it's bad to fully decharge a mac, and it also seems alright to not charge it fully or decharge it fully before charging. These were all kind of confusing to me as I thought to keep a battery healthy, you had to completelly drain it before charging it, charge it fully whenever you charge it, and it didn't hurt to keep it charging constantly.
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And if I am charging it on and off at school, what will happen (i.e. one period I charge it 20%, then unplug it and then charge it another 20% the next period)
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Macbook pro (15" - end 2011) battery life only works 3 hours - can you help me!!?

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