I have had my Wave for half a year now, and the numbers are ballpark from experience, but you can also read them in the specs. But they are very dependent on use, the Wave has a 1 GHz processor, and at full throttle it drains battery like the best of them. The difference is that Bada use a real OS, not a bloated *UX meant for servers. The point is, Bada is not extremely good on battery life, Android/Maemo etc is extremely bad, to the point of lunacy.

However, 2.0 comes with full multitasking, so I would expect battery life to be somewhat less, but not much and more dependent on use cases.