Is that sarcasm? I never had good battery life on a laptop running Windows. Linux has always been superior to me in that regard (maybe if nvidia optimus is at play?).
In this case Windows is the only sane choice (at least based on my experience from 2 years ago).
After a lot of reading random docs, I got to a point where I could stop the GPU from eating the battery doing nothing, but I could only disable/enable it by logging out then in. It was either no GPU at all or a GPU drawing maximum power, no in-between.
Maybe Nvidia's latest code releases will help with that?