Hm sounds fair.... Thanks man!Take hud_lz.bin decompress it with lz11.
Extract contents from the darc Archive.
Take the bclim file and convert to png (or use a tool that can view them) edit your battery icon convert it to bclim. Replace it and archive it to darc again. Then compress to lz11 again. Rebuild the CIA and profit.
There is probably a tool to do bclim replacements.