OK, 15 hours 4minutes and 59 seconds since I unplugged it from the charger earlier today GPS and Bluetooth have been left on the entire time and It's still not dead, but it is down to 10% battery remaining. The first 6 hours included some very heavy usage of apps that are known to be battery drainers as stated in my previous post. After that I was home and switched to moderate to light usage. Made and received some more phone calls, searched the market place for some new apps,played Zombie Run for another 20 minutes, listened to online radio with the new Motorola S9HD bluetooth headset that I picked up at BestBuy earlier and browsed the web some. 12 Hours since unplugging and it was at 20% so I decided to finish of the experiment by using GPS. I started navigation 32 minutes ago and its still going. Since the first 30 minutes of Nav used 10% battery I figure I have another 30 minutes till 0% which will put the total time on one charge at over 15 hours and 30 minutes with some pretty heavy usage

. I dont think you're gonna need to worry about carrying a charger or an extra battery with this phone.
Edit: The phone just shut down after 15 hours and 31 minutes of pretty heavy usage.