I've made a new custom battery icon, based off the line style icons in my blackmod theme. Colors stay the same as original, so 10% shows red line, 20% shows yellow and rest show green. Let me know what you think.
As always if you choose to install, please make backup first. This just replaces a few pngs in framework-res.apk so it should work on any ROM (2.0.1 or 2.1).
Screenshot: (both screenshots were taking with phone plugged in so the white charging icon isn't always there)