Poor battery backup

Hi
I recently got Mac Book Pro with Retina Display. Apple is claiming 7 hour battery backup but I am getting only approx 4.5 hours of battery backup. Any suggestions to increase the battery backup. I have tried disabling "Adjust Screen Brightness" & "Adjust keyboard lightness in low light".
Appreciate your help.
Thanks
Ratnesh

The Apple claims for battery life are based on very conservative test conditions that hardly reflect real life conditions.  Read their fine print very carefully.  I have found that 60%-70% of the advertised rate is an acceptable parameter.  Now if you use some really CPU intensive applications, the battery time will plummet.
You may find this support article informative:
http://support.apple.com/kb/HT1446
Ciao.

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