On Windows' battery life problems

Jeff Atwood loves everything about his Surface Pro 2 except for its terrible battery life.

The Windows light usage battery life situation has not improved at all since 2009. If anything the disparity between OS X and Windows light usage battery life has gotten worse. Microsoft positions Windows 8 as an operating system that's great for tablets, which are designed for casual web browsing and light app use – but how can that possibly be true when Windows idle power management is so much worse than the competition's desktop operating system in OS X – much less their tablet and phone operating system, iOS?

A typical data point: Windows, on a 13" MacBook Air, lasts about half as long per charge as OS X. What's the deal?