I just got my Telus Milestone on Friday, and my battery life is pretty aweful compared to the Windows Mobile devices I've had before it. Not that I'm not using the device... I certainly am since I'm downloading software off the Market, etc. But it just doesn't seem to take more than a couple hours to run down the battery.
Hearing the Extended Life didn't help some, I haven't even looked at what that would cost. A co-worker suggests having a charger at work, so I'm taking my spare there tomorrow.