Something a bit fishy is going on over at the official Nokia forums. A post addressing complaints about the Lumia 800's battery life by a Nokia staffer was mysteriously altered after letting slip that it's currently only using 1300mAh of its 1450mAh battery.
The original post was altered about an hour after posting, enough time for the eagle-eyed PsychoMania to grab a screen cap (see below). Whether this was just a slip-up by the forum poster; Nokia revealing a little more than they were meant to; or a mix-up between Espoo and support staff, we don't know. But it would be interesting to entertain the idea that Nokia's artificially limiting the battery capacity of the Lumia 800 by 10 per cent. I'm not quite sure why you would do that, except for shorter charge times to 'full' -- but that doesn't seem worth it to me.
We reached out to Nokia for comment and got the same statement given to the Nokia Support Discussion forums, so Nokia's keeping schtum on the matter. Seems like we'll just have to wait till January to find out.