Unlike NuCharge, Freedom 2000 is a permanently fused-together solution; the battery can’t be removed from the shell-style case when it’s not needed. Your iPhone snaps into Freedom’s front, protected on three sides by thick rubber walls, and along the back by a foam material. Unfortunately, the screen sits flush with the rest of the case, so it’s not as protected from falls as it would be if there was a proper protective lip.…