After allowing the laptop to stay on the charger overnight, I've been using it cordless for the past several hours (looking up directions and fixing baked unbreaded chicken wings). I've been at it for probably 1 1/2hr, and the battery status shows I've only used 12%.
10hrs battery life without sleeping? And with wireless enabled the whole time? Not bad, as an early rough estimate. If it handles sleeping like Windows CE/Mobile, it probably uses very little power while sleeping (remember, it has almost instant to/from sleep), and could probably go a week (or more) between charges with light use.
1 1/2hrs to fix some wings? Yea, I'm slow in the kitchen, but this included cleaning the wings/removing tips and the loose folds of skin, preheating the oven, cleaning out the dishwasher, etc. But not the actual baking - they're cooking now. I've got a timer app going in another tab, and a second instance of the app ready for after turning them.
And now that this post is done, the battery meter is down by another 1%. I'm also slow with typing and editing my thoughts. :)