I am sure this is a question with an obvious answer, but as I can't seem to find it, is there a way to possibly use the default ICS battery icon instead of the circular one?
extract the systemui.apk from system/data of the new rom
do the same from an old rom that has the battery icon you want
open the old systemui.apk extracted folder
go to drawable-hdpi
copy all the battery icons (should be 100-200 of them)
open the new systemui.apk extracted folder
paste the copied icons and replace the existing ones
rezip the new folder using 7zip with no compression
make sure the new file is .apk and not .zip
replace the systemui.apk with the one you just created