Thanks for your replys. When I saw the specs for the HTC Trohpy I was a bit concerned with the 1300mAh battery. I had a pre and the battery life was just horrible and I believe the battery was about the same as the trophys. I just wish manufacturers added a bigger battery in each phone like HTC but I'm I think WinPhone7 has efficient use of the batterys.
i think the biggest issue for manufacturers is getting the smallest form factor possible using the biggest battery they can. i have the pre, atrix, iPhone 4, blackberry 9700 and the focus (wp7) and the pre is just horrible. you would think having wifi-only (no cellular data) would help, but that phone just eats battery life like no other.
out of all my phones, the focus does came in 2nd to last, sadly. i've been getting 15+ hours a day with my atrix and 24+ hours on my 9700 and iPhone 4 before needing a charge.
i don't do any tweaks what so ever to increase battery power. i can actually put my blackberry's brightness to around 10% and not see much difference, but get 2 days worth of battery use.
however, out of all the phones i have and use, the focus comes 2nd place in respect to how crisp the screen is and i guess that's the trade-off. great screen quality, average smartphone battery life.