Whereas previosly I was bemoaning the poor battery live on my 15.2" FW800, I noticed that after: 1. turning BlueTooth off 2. draining the battery completely and fully recharging it 3. installing Battery Update 1.1, my battery life has increased significantly. I get the impression that it was the Battery Update that made the largest difference. It now shows at least 2h on full charge. Right now it is showing 2 h 35 (full screen brighness). The most it has shown is 3h. So somewhere between 50% and 100% more than last week. :-) Not as good as the Ti-500 was, but now "acceptable" I think. regards, Trevor