Battery on my 2011 15" MBP hasn't been working recently

[Fazzl]

I have a 15" MBP from 2011 (latest one) and for the past month or so, battery life has been terrible.

Here is a screenshot showing that there are hardly any processes and brightness is 50% yet it only shows 3 hours at 92%.

Any ideas?

 

[awer25]

Are you playing Flash video or using the discrete GPU? Try only using Safari with Click2Flash installed and also forcing your integrated GPU to be used via gfxcardstatus.

 

[ReanimationN]

Mine's been like that since I got it. It shows I have 3:30 when fully charged. I should probably take it back, again, but I can't be bothered- I've already taken back 2 other MBPs with defective graphics cards.

 

[GGJstudios]

There are many factors that contribute to battery life. Read the BATTERY LIFE FROM A CHARGE section of the following link. This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​