I have to admit I'm tempted to pick up a 3800, I have a 2600 now and honestly I've yet to run into a situation where I've killed the battery early yet but I'm also a pretty heavy power user and could really run this phone full force with that extra juice. On my current 2600. I get around 8-9 hours of full-on usage (not counting navigation) and just over two days easily on minimal usage.