[askwhy]

I see very similar numbers to what J.eremy posted in terms of battery drain -- maybe a bit lower at idle on average. When I am indoors (which means my backlight is mostly at 30%) I see a drain of usually around 110, but always under 140 when idle except for momentary spikes -- if I turn bluetooth on it hovers around 125, but always under 180 when idle, and seems to stay under 240 even when BT is active without a call (in this case making repeated faulty MSVC requests to keep it active). It jumps to between 400-500 during a bluetooth call and even spikes to around 600 occasionally that I have observed. Bluetooth is really a pretty big power drain, definitely up there with backlight. Turning it off when you don't need it should be a habit of anyone trying to maximize their battery life.

EDIT: For what it's worth, the power drain on a non-bluetooth call is still up to 550 for me, so it's not as if BT calls cost significantly more power, it's BT in general that uses a lot.