First, i'm wondering if you can change the battery symbol from a phone. I know boot animations work because I've changed mine using UOT. But when I try to change the battery icon style, when I get to the part where I need to upload files I click on the button to choose files and nothing happens. Second, if I already have a custom theme and I get the battery icon to work and that I'd the only thing I change, would that apply to theme i'm using? Or would it revert everything else to the stock theme that came with my ROM? Any input would be appreciated!! TIA!!!