Cross posting from my personal blog, where I uploaded my battery report for my Surface Pro 2 after 3 months.

It's been a rocky ride, with the device getting the firmware blues and having to put up with my all computer all day lifestyle, but I think it's holding up well. I think. Thing is, I have no comparison to see if I'm hurting the device, or if the December update has killed my LiOn cell more than I wanted it to.

So if you own a SP2, open up a command prompt and run this: powercfg /batteryreport

That'll make a new file in your user folder, with graphs and numbers and all that crazy stuff. I'm curious to see how it compares to my own, so if you feel like sharing and comparing for the community, dive on in!