This is my very first modification for iphone.
Lockscreen battery like drill core disc from anime Teggen Toppa Gurren Lagann.
I saw something like this but I think mine is better. ^^U
I <3 Gurren Lagann (Cosplayed time skip Simon)... Anyways, this one is better then the other one I must say. I want to try to make one, but it doesn't look like an easy task. I know photoshop "like I know the back of my haaa.. OH WHAT THE HELL IS THAT?!" LoL na I'm pretty good with PhotoShop, just cant find a good enough source image, I think I'll try it with the screen shot you got though.