I think I found out why Lion battery drain is so hardcore on my Air: it's the glass dock. If you haven't done so already, I'd suggest that you stick it either to the left or right side of the screen, which would disable the glass effect. Or alternatively in case you love having it on the bottom: Download TinkerTool Install it. Open it. Go to the "Dock" tab. Check "Disable three-dimensional glass effect". Click "Relaunch dock". Also, if you haven't done so already, you may want to disable the new window effect. It may not happen all the time, but it does cause troubles when it does. Open Terminal (Applications > Utilities > Terminal). Copy and paste the following: defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool NO Then press enter. If you somehow find yourself missing that animation for whatever reason at all, you can do the same thing as above to re-enable it. But use this line instead: defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool YES I'm guessing the reason why these animations and graphics effects are causing trouble is because all of them use the GPU somehow, and Apple may not be having a lot of fun with handling different GPUs in Lion, as evidenced by reported problems with iMac. Well, let me know if that did the trick.