Estimated Time for 100% Battery?

Hi,
I have a MacBook Pro 15 inch (2011 model) for three months now and I'm just wondering, what is the "normal" estimated time for 100% charged battery on this model of MBP (provided that the wifi is on and screen brightness is at 50%)? Mine is saying 6 hours and 10 minutes. Is that normal?
Regards,
Jay

Thanks, I'll give it a go! Btw, can you please tell me what is your full charge capacity? (Maybe that has something to do with my reduced battery life?) Mine is saying 6633mAh.
p.s. you can find this by clicking on apple icon (top left corner) > about this mac > more info > power (on the left pane) - it should then show details of full charge capacity on the right
Cheers,
Jay

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Estimated Time for 100% Battery?

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