ONLY TESTED ON Wolfbreak's CM 6.1.3 V053
TESTED ON Wolfbreak's CM 6.1.3 V054, seems working fine.
So I compiled the framework-res.apk and changed the XML to display 1% battery icon in the status bar only, didn't touch anything else.
Hope this could be kinda useful for some of you.
I've uploaded 2 versions one with my own simple battery icon while another one using kevjef420's MattedBlues battery icon. I borrowed the charging icons from kevjef420's theme hope that's fine. You're happy to change to any battery icons you'd like.
No HW LED issue with the work.
MattedBlues version (didn't test but should be ok):