Did it fit good with your ext battery?
It fits the same as the Otterbox. The extended battery fits the otterbox without the cover on or if you cut out the back cover for the battery. The Trident is exactly the same as the Otterbox for fit. When I had the Otterbox on my phone I did'nt use the cover for the extended battery. The trident is exactly the same fit so right now I am not using the battery cover. I could modify the cover to get it to fit but have not got around to it yet.