I need to replace my battery in my iPhone 3G, and am thinking of buying an eforicty battery, but I also see the 1600mah ones and think I might get one of those. I have yet to see a post where someone installed a 1600mah battery, then came back and reported on quality. Does anyone have a greater than 1150mah battery installed in their 3G? If so how does it perform and where did you get it? I am willing to put it in myself.