It's because you probably don't have a 1 percent battery mod. If not your battery will drop by 5's..
Sent from my SGH-T889 using xda premium
Now i have. I flashed the theme then reboot. Let it sit, then flashed 1 percent mod, then reboot, i got the ordinary bat icon back then i flashed back the theme to get the colored icon.
POWERED by the MASTER!