What systemUI do you have the link up for?
I'm not sure what to ask so lets start with simple stuff...
Is this currently working in any rom, even an old one so I can pull some xml files so it displays properly? (I will need that SystemUI.apk)
And I also need the SystemUI.apk for the rom you want to adapt it for. You can rename them so I know which is which if you want.
(ie. ND8_SystemUI.apk & Working_old.SystemUI.apk or something like that)
The reason I ask for a working version is because just renaming and replacing the png images may not work completely. The battery display xml files may need to be changed too so the animated part looks good too.
Edit: Maybe I'm asking the wrong questions, dunno.
Does that rom already have to 1% battery mod integrated? Maybe just try vrtheming the png files and see what happens?
Edit2: That SystemUI you posted doesn't have the 1% battery mod yet. It needs to be added.